materials and mechanisms of superconductivity high temperature superconductors ii … ·...
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Proceedings of the International Conference on
Materials and Mechanisms of SuperconductivityHigh Temperature Superconductors II
Parti
Stanford University, California, USA, July 23-28, 1989
Editors:
Robert N. SheltonUniversity of CaliforniaDavis, California
Walter A. HarrisonStanford UniversityStanford, California
Norman E. PhillipsLawrence Berkeley Laboratory and University of CaliforniaBerkeley, California
,1989
JORTH-HOLLAND UNIVERSITATSniBLIOTHEKHANiJ
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OVER
iSCHEir-JFORMATiONG3IBLIOTHEK
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CONTENTS
PrefaceIntroductory remarksConference summaryList of committeesAcknowl edgements
vnixxixv
xvi
PARTI
Al. Plenary papers (Monday, 24 July 1989)
ALL High-Tc materials
Crystal chemistry of oxide superconductorsA.W. Sleight
A 1.2. Physical properties ofhigh-Tc superconductors
Properties and parameters of the superconducting oxidesG. Griiner
Harmless survey of the theoretical situation in the high temperature superconductivityL.P. Gor'kov 12
A2. Combined papers (Monday, 24 July 1989)
A2.1. Thin film synthesis - Chemistry/property relations
Field-modulated microwave absorption study of Pb-modified Bi-Ca-Sr-Cu-OW.-F. Yau, R. Ramesh, A.M. Portis, E.R. Weber, G. Thomas, S.M. Green and H.L. Luo
Effect of the oxygen distribution on high Tc superconductivityY. Bruynseraede, J.-P. Locquet, J. Vanacken, B. Wuyts, C. van Haesendonck and I.K. Schuller
Substitutions of 3-d transition metal ions for copper in Bi2Sr2Can_1CunO2n+4T.E. Jones, P.M. Thibado, W.C. McGinnis, R.D. Boss, J.W. Schindler and S. Oseroff
Synthesis and superconducting properties of (Bi, Pb)-Sr-Ca-Cu-O systemN. Kobayashi, H. Kawabe, K. Kusaba, M. Kiuchi, Y. Syono and Y. Muto
Structure and properties of a metallic, cubic thallium-doped barium cuprateZ. Iqbal, B.L. Ramakrishna, F. Reidinger, H. Eckhardt and J.C. Barry
Magnetic and superconducting properties of Fe-substituted (La, Sr)2CuO4_<s
M. Reissner, W. Steiner, K. Remschnig, P. Rogl and E. Gratz
21
23
25
27
29
31
xviii Contents
Magnetic ordering in YBa2Cu3Ox studied by fi+ spin rotationJ.H. Brewer, J.F. Carolan, W.N. Hardy, H. Hart, R. Kadono, J.R. Kempton, R.F. Kiefl,S.R. Kreitzman, G.M. Luke, T.M. Riseman, P.W. Schleger, B.J. Sternlieb, Y.J. Uemura,D.LI. Williams and B.X. Yang 33
Effect of Mg addition on superconducting properties of Bi-Sr-Ca-Cu-O compoundsR.J. Lin, S.W. Lu and P.T. Wu 35
Effect of oxygen annealing on single crystals of YBa2 (Cu! -xFex)iO7_y Mossbauer spectroscopyI.V. Zubov, A.S. Ilyushin, R.N. Kuz'min, V.S. Moisa, A.A. Novakova and A.A. Bush 37
A new series of (Tl1_i,Biy)(Ca1_^Y^.)Sr2Cu2Oz superconductors with "1122" structureY.T. Huang, R.S. Liu, W.N. Wang and P.T. Wu 39
On inhomogeneous superconductivity in Fe substituted YBa2Cu307_,5M. Carrera, X. Granados, M.A. Crusellas, J. Fontcuberta, X. Obradors, J.L. Garcia-Mufioz,J. Rodriguez, M. Vallet, J.M. Gonzalez-Calbet, C. Rillo and F. Lera 41
A magnetic study of Y1_ArR^Ba2Cu3O7_^ ceramic superconductors with R = Dy and ErR. Job, M. Rosenberg and K. Nahm 43
Structure of Fe-doped Y ^ a ^ ^ O ^ and Bi2Sr2CaiCu2Oj,O. Bremert, C. Michaelsen and H.-U. Krebs 45
Effects of substitution in different atomic sites in superconducting YBa2Cu3O7
Y. Zhao, H. Zhang and Q. Zhang 47Superconducting properties in relation to chemical pressure in YBa2Cu3O9_,5
H. Fjellvag, P. Karen, A. Kjekshus and A.F. Andresen 49Cobalt clusters in substituted YBa2(Cu1_J/Co>,)3O6+x
H. Renevier, J.L. Hodeau, P. Bordet, J.J. Capponi, M. Marezio, F. Baudelet, H. Tolentino,G. Tourillon, E. Dartige, A. Fontaine, J.C. Martinez and J.J. Prejean 51
Structural changes and oxygen stoichiometry in Pb2Sr2Yi_JCCaArCu3O8+i
J.J. Capponi, P. Bordet, C. Chaillout, J. Chenavas, O. Chmaissem, E.A. Hewat, J.L. Hodeau,W. Korczak and M. Marezio 53
Oxygen diffusion in Ba2YCu307_^ investigated by thermogravimetric relaxation techniqueK. Kishio, K. Kitazawa, K. Suzuki, T. Hasegawa and K. Fueki 55
Structural aspects of the phase separation in La2CuO4032C. Chaillout, J. Chenavas, S.-W. Cheong, Z. Fisk, M.S. Lehmann, M. Marezio, B. Morosinand J.E. Schirber 57
Oxygen content and structural properties of some Ba-Cu oxidesS.G. Eriksson, L.-G. Johansson, L. Bjorjesson and M. Kakihana 59
Praseodymium 1-2-3: intrinsic structure, oxygen concentration effects and solid solutions withyttrium, calcium and zincM.E. Lopez-Morales, A. Bezinge, P.M. Grant and D. Rios-Jara 61
Hole concentration, Hall number and disorder in compensation doped NdBa2Cu3O>,T. Penney, M.W. Shafer and B.L. Olson 63
Hydrogen intercalation in some superconducting copper oxidesT. Takabatake, W. Ye, S. Orimo, T. Tamegai and H. Fujii 65
Superconducting properties and phonon spectra of Bi2Sr2Y|_xCa^Cu2Oy
R. Yoshizaki, H. Ikeda, Y. Saito and Y. Abe 67Chemical probes of Tc vs p in p-type copper-oxide superconductors
A. Manthiram and J.B. Goodenough 69
Contents xix
Formation of YBa2BiO6 and its effect on the superconductivity in Bi replaced YBa2Cu3Oy
N. Yang, R.S. Liu, W.N. Wang, Y.H. Chao, H.C. Lin and P.T. Wu 71Investigations on oxygen content and ordering in Yr(Ba, Sr)2(Cu, Co)3O7_d superconductors
by means of wet chemical analysis, X-ray- and neutron diffraction techniquesS.G. Eriksson, L.-G. Johansson, L. Borjesson and M. Kakihana 73
Ion microprobe characterization of E-beam deposited YBaCu(F)O films: effects of post-de-position processingJ.M. Chabala, R.P.R. Chang, J.B. Ketterson, R. Levi-Setti, D.X. Li, Y.L. Wang and X.K. Wang 75
Structural change induced in Kr irradiated RBaCuO ceramics (R = Gd, Ho)M.-O. Ruault, M. Barrachin, J. Lesueur, L. Dumoulin, H. Bernas, M. Gasgnier, J.C. Levet,H. Noel, R. Gougeon and M. Potel 77
Superconductivity and the structure of YBa2Cu3O6 ceramics and single crystals treated in hal-ogen vapoursYu.A. Ossipyan and O.V. Zharikov 79
Critical oxygen partial pressure for the "in-situ" preparation of high Tc superconducting thinfilmsR. Bormann and J. Nolting 81
Effects of oxygen stoichiometry and ordering in Ba2YCu3Oy ( 6<y<7)Y. Nakazawa and M. Ishikawa 83
The effect of lead additon to the Bi-Cu HTSC: phase separationM.A. Senaris-Rodriguez, F. Garcia-Alvarado, E. Moran, M.A. Alario-Franco, M.A. Gonzalez,J.L. Vicent and J. Ibaflez 85
Superconductivity in the Re,_^Cd^Ba2Cu3O7_rf (RE = Y, Nd, Sm, Gd, Dy, Ho, Yb) systemsJ.W. Chen, T.C. Chang and C.F. Chen 87
Superconductivity and magnetic scattering in the Nd2_^Ce^CuO4_,5 compoundsJ.L. Peng, R.N. Shelton and H.B. Radousky 89
Effect of electron and volume change via SB(V) doping on the superconducting behavior of
B. Dabrowski, D.R. Richards, D.G. Hinks, R.H. Hannon, H. Lee, V.J. Melim, W. Peng andC.W. Kimball 91
Symmetry breaking oxygen displacements in superconducting oxidesT. Egami, B.H. Toby, W. Dmowski, S. Billinge, P.K. Davies, J.D. Jorgensen,M.A. Subramanian and A.W. Sleight 93
Chemistry and superconducting behavior of Sb-substituted Bi/Pb-based oxidesC.W. Kimball, W. Peng, R.H. Hannon, H. Lee, A.P. Genis, V.J. Melim, B. Dabrowski,D.R. Richards and D.G. Hinks 95
Varied oxygen stoichiometry in RBa2Cu307_^B.W. Veal, A.P. Paulikas, J.W. Downey, H. Claus, K.G. Vandervoort, G. Tomlins, H. Shi,M. Jensen and L. Morss 97
La2CuO4+(5 and La2NiO4+(!: phase separation resulting from excess oxygen defectsB. Dabrowski, J.D. Jorgensen, D.G. Hinks, S. Pei, D.R. Richards, H.B. Vanfleet andD.L. Decker 99
Ordering in Tl2CaBa2Cu208 and Tl2Ba2CuO6 studied by pair distribution function and RietveldanalysisB.H. Toby, W. Dmowski, T. Egami, J.D. Jorgensen, M.A. Subramanian, J. Gopalakrishnan,A.W. Sleight and J.B. Parise 101
xx Contents
The effect of oxygen stoichiometry on the superconducting properties of YBa2Cu3O7_(S near thetransition temperatureM. Slaski, T. Laegreid, O.-M. Nes, S. Gjelmesli, P. Tuset, K. Fossheim and Z. Bukowski 103
Transport critical current and morphology for Y-Ba-Cu-O films prepared by chemical vapordepositionY. Muto, K. Watanabe, N. Kobayashi, H. Kawabe, H. Yamane, H. Kurosawa and T. Hirai 105
Magnetic measurements on coevaporated YBa2Cu3O7 thin filmsP. Norling, K. Niskanen, P. Svedlindh, P. Nordblad, L. Lundgren, J. Hudner, H. Ohlsen andL. Stolt 107
Preparation of thallium superconductors by solid state and "sol-gel" methods and theircharacterizationW. Reith, C. Allgeier, K. Andres, J. Heise, R. Hoben, A.-K. Klehe, R. Kleiner, C. Kowal,A. Moise, P. Miiller and J.S. Schilling 109
Electrophoretic deposition of highly textured YBa2Cu307_x thick filmsM. Hein, E. Mahner, G. Muller, H. Piel, L. Ponto, M. Becks, U. Klein and M. Peiniger 111
A sol-gel route to prepare Tl-Ca-Ba-Cu-O superconductor with Tc above 120 KR.S. Liu, W.N. Wang, P.T. Wu and C.T. Chang 113
Zero resistivity at 81 K in BSCCO films grown from liquid KC1 solutionsG. Balestrino, R. Di Leo, M. Marinelli, E. Milani, A. Paoletti and P. Paroli 115
The growth and characterization of Bi-Pb-Sr-Ca-Cu-O films on single crystal substrate by spraypyrolysis and RF magnetron sputteringJ.J. Chu, M.R. Tseng, F.J. Shieh and P.T. Wu 117
In-situ preparation of c-axis oriented Y-Ba-Cu-O and Bi-Sr-Ca-Cu-O films on Si-substratesby laser ablationH.-U. Krebs and M. Kehlenbeck 119
YBCO films on YSZ and A12O3 by pulsed laser depositionD.K. Fork, K. Char, F. Bridges, S. Tahara, B. Lairson, J.B. Boyce, G.A.N. Connell andT.H. Geballe 121
Fast one step preparation of high quality YBa2Cu3O7_x thin films by laser ablationJ. Frohlingsdorf, P. Leiderer, R. Feile, W. Zander and B. Stritzker 123
Parameter study of in-situ grown superconducting YBaCuO thin films prepared by laser ablationD.H.A. Blank, D.J. Adelerhof, J. Flokstra and H. Rogalla 125
Anisotropic electrical properties of epitaxial YBa2Cu3O7_^ films on (110) SrTiO3
A. Gupta, G. Koren, R.J. Baseman, A. Segmiiller and W. Holber 127Pulsed laser deposition of YBa2Cu3O7_^ in an oxygen background and discharge
D.B. Chrisey, K.S. Grabowski and M.S. Osofsky 129Magnetic study of superconductivity in YBa2Cu3O7_x thin films
T.R. McGuire, A. Gupta, G. Koren, R.B. Laibowitz and D. Dimos 131Superconducting Tl-Ca-Ba-Cu-O thin films prepared by diffusion of Tl into an excimer laser
ablated Ca2Ba2Cu3O^ filmJ. Betz, H. Lengfellner, E. Duschl, K. Meidenbauer and K.F. Renk 133
Superconducting properties and irradiation induced effects of epitaxial YBaCuO thin filmsB. Roas, B. Hensel, G. Endres, L. Schultz, S. Klaumunzer and G. Saemann-Ischenko 135
A new route for the deposition of YBaCuO thin filmsM. Langlet, E. Senet, J.L. Deschanvres, F. Weiss, J.C. Joubert, O. Thomas and J.P. Senateur 137
Contents xxi
Transport and magnetic properties of plasma sprayed YBaCuO and BiSrCaCuOR. Suryanarayanan, A.M. Bouanani, G. Brun, G.T. Bhandage and O. Gorochov 139
Deposition and characterization of Y-Ba-Cu-O thin films on silicon substrates: interface analysisD.B. Fenner, D.K. Fork, J.B. Boyce, G.A.N. Connell and A.M. Viano 141
An electrochemical method for the determination of the chemical diffusion coefficient of oxygenin Y1Ba2Cu3O7_J. as a function of vacancy concentrationJ. MacManus, D. Fray and J. Evetts 143
A2.2. Magnetic spin resonance- Theory (Phenomenology)
The /zSR-investigation of the magnetic and superconducting properties of the compoundL S A OV.G. Grebinnik, V.N. Duginov, V.A. Zhukov, S. Kapusta, A.B. Lazarev, V.G. Olshevsky,V.Yu. Pomjakushin, S.N. Shilov, I.I. Gurevich, B.F. Kirillov, B.A. Nikolsky, A.V. Pirogov,A.N. Ponorarev, V.A. Suetin, A.G. Peresada, M.D. Nersesyan, I.P. Borovinskaya,V.R. Karasik, O.E. Omelyanovsky and T.G. Togonidze 145
Superconductivity and magnetism of La2CuO4+<i by /iSRE.J. Ansaldo, J.H. Brewer, T.M. Riseman, J.E. Schirber, E.L. Venturini, B. Morosin,D.S. Ginley and B.J. Sternlieb 147
Dependence of the magnetic ordering in YBaaCusO^H^ on the oxygen and hydrogenconcentrationH. Gliickler, A. Weidinger, A. Golnik, C. Niedermayer, M. Rauer, R. Simon, E. Recknagel,J.I. Budnick, W. Paulus and R. Schollhorn 149
Measurement of the London penetration depths in YBa2Cu3Ox by means of muon spin rotation(,uSR) experimentsB. Piimpin, H. Keller, W. Kundig, W. Odermatt, I.M. Savic, J.W. Schneider, H. Simmler,P. Zimmermann, J.G. Bednorz, Y. Maeno, K.A. Miiller, C. Rossel, E. Kaldis, S. Rusiecki,W. Assmus and J. Kowalewski 151
/z+SR evidence for strong exchange interactions in ErBa2Cu3O^P. Birrer, F.N. Gygax, B. Hitti, E. Lippelt, H. Maletta, A. Schenck and M. Weber 153
fiSR study of the magnetic phase diagram of Bi2Sr2Yi_;>.CaJ(.Cu2O8+(5R. De Renzi, C. Bucci, P. Carretta, G. Guidi, R. Tedeschi, G. Calestani and S.F.J. Cox 155
Coexistence of superconductivity and magnetic order in YBa2Cu3O^J.H. Brewer, J.F. Carolan, W.N. Hardy, B.X. Yang, P.W. Schleger, R. Kadono, J.R. Kempton,R.F. Kiefl, S.R. Kreitzman, G.M. Luke, T.M. Riseman, D.LI. Williams, K. Chow, P. Dosanjh,B. Gowe, R. Krahn and M. Norman 157
Magnetic correlations in superconducting YBa2Cu3O66 ( r c = 40 K) observed by muon spinrotationC. Niedermayer, A. Golnik, H. Gliickler, M. Rauer, R. Simon, E. Recknagel, A. Weidinger,J.I. Budnick, H. Eickenbusch, W. Paulus and R. Schollhorn 159
/iSR study of magnetism in La1.85Sro.15Cu04 and YBa2Cu3Ox below 90 mKR.F. Kiefl, E.J. Ansaldo, J.H. Brewer, J.F. Carolan, P. Dosanjh, W.N. Hardy, R. Kadono,J.R. Kempton, W.J. Kossler, R. Krahn, S.R. Kreitzman, G.M. Luke, P.W. Schleger,C.L. Seaman, B.J. Sternlieb, H. Takagi, S. Uchida, Y.J. Uemura, B.X. Yang, X.H. Yu andH.Zhou 161
xxii Contents
Nuclear quadrupole resonance studies in Ga-doped YBa2(Cu1_^Ga^)3O7_<5 (<5=O.O5)A.K. Rajarajan, L.C. Gupta, R. Vijayaraghavan and N.C. Misra 163
Cu NQR of (Y,_yCa^)Ba2Cu3O6
A.J. Vega, M.K. Crawford, E.M. McCarron and W.E. Farneth 165
Antiferromagnetism in YBa2Cu3O6+^ studied by "Cu and 89Y NMRP. Mendels, H. Alloul, T. Ohno, G. Collin and J.F. Marucco 167
Cu spin dynamics in high Tc and related oxides investigated by nuclear spin-lattice relaxationT. Imai, H. Yasuoka, T. Shimizu, Y. Ueda, K. Yoshimura and K. Kosuge 169
Linewidth of Cu NQR signals in YBa2Cu3O7_,5 and oxygen defect distributionH. Schiefer, M. Mali, J. Roos, H. Zimmermann, D. Brinkmann, S. Rusiecki and E. Kaldis 171
Pressure effects of NQR parameters in YBa2Cu3Oy
K. Miiller, M. Mali, J. Roos and D. Brinkmann 173
Anomalous temperature dependence of Cu NMR line width and magnetization in YBa2Cu3O7_a
M. Takigawa, P.C. Hammel, R.H. Heffner, Z. Fisk, J.D. Thompson and M.P. Maley 175
Nuclear relaxation rates at copper and oxygen sites in YBa2Cu3O7
P.C. Hammel, M. Takigawa, R.H. Heffner, Z. Fisk and K.C. Ott 177
Nuclear relaxation and Cu spin dynamics in YBa2Cu3O6+x
W.W. Warren Jr., R.E. Walstedt, G.F. Brennert, R.F. Bell, G.P. Espinosa and R.J. Cava 179
Cu-NMR of the antiferromagnetic and superconducting Nd2_xCexCuO4_y
K.i. Kumagai, M. Abe, S. Awaji and T. Fujita 181
Cu-AFNR and NQR of the antiferromagnetic and superconducting Bi2Sr2(Ca1_^Y^)Cu2O8+J,K.i. Kumagai, T. Oashi, H. Nakajima, T. Tomita and T. Fujita 183
Magnetic order at Cu sites in superconducting YBa2(Cui_xFeA:)3O7
Y. Nakamichi, K.i. Kumagai, H. Nakajima and T. Fujita 185
Cu-NQR study on the antiferromagnetism and superconductivity in La2_xSr,.CuO4
Y. Nakamura and K.i. Kumagai 187
NQR characterization of Bi2Sr2Can_!CunO4+2n materialsG. Guidi, C. Bucci, P. Carretta, R. De Renzi, R. Tedeschi, G. Calestani and C. Vignali 189
Spin dynamics in YBa2Cu3O7_,5 with 0.0<J<0.6 studied by 89Y-NMRJ.C. Jol, H.B. Brom, J. van den Berg, R.A. Zacher and M. Besselink 191
89Y NMR studies of the electronic properties of 123 compoundsH. Alloul, T. Ohno and P. Mendels 193
NMR study of l7O in high Tc superconducting oxidesY. Kitaoka, Y. Berthier, P. Butaud, M. Horvatic, P. Segransan, C. Berthier, H. Katayama-Yoshida, Y. Okabe and T. Takahashi 195
Distortion induced bi-polaron model for oxide superconductorsW.Y.Liang 197
Stability of antiferromagnetism in high Tc superconductorsD. Peter, D. Mayou and M. Cyrot 199
On the nature of isotope effect in the RVB models of superconductivityD.V. Fil', D.O. Livdan and O.I. Tokar' 201
Anisotropic superconductivity in high-!Tc layered crystalsS.S. Jha 203
Contents xxiii
Strong-coupling effects on K2(T) for high-Tc superconductors?J. Rammer and W. Pesch 205
Spin dynamics of cuprate superconductors: exact results from numerical continued fractionexpansionsC.-X. Chen and H.-B. Schuttler 207
Correlation between mxing of Cu d orbitals and Tc determined by polarized Cu L3 XAS: ex-perimental evidence for pairing mediated by d-d excitationsA. Bianconi, P. Castrucci, A. Fabrizi, M. Pompa, A.M. Flank, P. Lagarde, H. Katayama-Yoshida and G. Calestani 209
One hole spectra at YBa2Cu3O7 surfacesC. Calandra, F. Manghi and T. Minerva 211
On the linear temperature dependence of the Hall number in YBa2Cu3O7
X. Oudet 213Phase separation near the Mott transition in La2_xSr^.CuO4
R.S. Markiewicz 215A unified approach to the description of high Tc oxides: major normal and superconducting
parametersS.A. Wolf and V.Z. Kresin 217
Superconductivity and valence bondX. Oudet 219
Electronic states near the metal-insulator transition in oxide superconductorsH. Matsumoto, M. Sasaki and M. Tachiki 221
Oxygen vacancy ordering in YBa2Cu3O7_y
P.A. Sterne and L.T. Wille 223Monte Carlo simulation of oxygen ordering in YBa2Cu3O2
C.P. Burmester, M.E. Mann, G. Ceder, L.T. Wille and D. de Fontaine 225Superconducting glass state in the random infinite-range interaction extended Hubbard model
T.K. Kopec and P. Wrobel 227Dipole superconductive glass model in a Josephson medium
V.I. Aksenov, E.I. Kornilov and S.A. Sergeenkov 229Entangled fluxoid liquid state in high Tc superconductors
S.B.Nam 231Superconducting glassy state induced by twins
A.VI. Gurevich and R.G. Mints 233Flux lattice melting in the high-rc materials
R.S. Markiewicz 235Effect of thermal fluctuation on magnetic flux depinning and the crossover from flux creep to
flux flowM. Inui, P.B. Littlewood and S.N. Coppersmith 237
Flux pinning and creep in high-Tc superconductorsV. Geshkenbein, A. Larkin, M. Feigel'man and V. Vinokur 239
Intrinsic flux pinning in high Tc oxide superconductorsM. Tachiki and S. Takahashi 241
Pinning of two phases of high temperature superconductorsA.G. Saif 243
xxiv Contents
Influence of thermal phonons on a local-pair superconductivityD.I. Khomskii 245
Neutron scattering from fermion and boson superconductorsA.K. Rajagopal, W. Jin and S.D. Mahanti 247
Generalized Bose-gas condensation model for Tc in multi-dimensional superconductivityM. Rabinowitz 249
Possible explanation of the curvature in the upper critical field for ceramic and heavy-fermionsuperconductorsH.R. Brand, H. Pleiner and M.M. Doria 251
The Ln2Cu2O5 ESR study (Ln = Y, Tb-Lu)A.A. Gippius, V.V. Moshchalkov, Yu.A. Koksharov, A.N. Tikhonov, B.V. Mill andY. Zoubkova 253
NMR studies of new oxides in the Ba-Sc-Cu-0 systemA.A. Gippius, V.V. Moshchalkov, Yu.M. Petrusevich, O.P. Revokatov, E.V. Antipov andA.L. Kcharlanov 255
Magnetic field density of distorted vortex latticesE.H. Brandt 257
Magnetic penetration depth of Bi-Sr-Ca-Cu-OE.J. Ansaldo, B. Batlogg, R.J. Cava, D.R. Harshman, L.W. Rupp Jr., T.M. Riseman andD. Williams 259
Calculation of the nuclear quadrupole resonance spectra of YBa2Cu307_j:
N.W. Winter and C.E. Violet 261NMR of 17O and 63Cu in uniaxially aligned superconductor YBa2Cu3O7_,s
E. Lippmaa, E. Joon, I. Heinmaa, A. Miller, V. Miidel, R. Stern and S. Vija 263
NMR study of 6 3 "Cu in YBa2Cu3O7 to 6.65 single crystalsM. Horvatic, P. Segransan, Y. Berthier, P. Butaud, Y. Kitaoka, C. Berthier, J.Y. Henry andM. Couach 265
NQR and NMR study of Bi-(PB)-Sr-Ca-Cu-O ceramic superconductorsR. Michalak, M. Rosenberg and H. Lutgemeier 267
Unconventional superconductivity in heavy fermionic and high-Tc superconductorsG.E. Volovik 269
Superconductivity of fermi glassesB.K. Chakrabarti and D.K. Ray 271
Ginzburg-Landau calculations of the critical current densities of grain boundariesA.M. Campbell 273
Fluctuation contribution to flux-flow conductivityK. Maki and R.S. Thompson 275
Thermoelectric effects in high-temperature superconductorsV.L. Ginzburg 277
Contents xxv
A3. Invited papers (Monday, 24 July 1989)
A3.1. Materials chemistry of high-Tc superconductors
Oxygen stoichiometry and superconductivity in YBa2Cu3O6+x and Pb2Sr2Y,_A.Cax08+rfM. Marezio, P. Bordet, J.J. Capponi, R.J. Cava, C. Chaillout, J. Chenavas, A.W. Hewat,E.A. Hewat, J.L. Hodeau and P. Strobel 281
On the crystal growth and chemistry of the new electron-type superconducting oxidesJ.-M. Tarascon, E. Wang, L.H. Greene, R. Ramesh, B.G. Bagley, G.W. Hull, P.F. Miceli,Z.Z. Wang, D.A. Brawner and N.P. Ong 285
Disappearance of high temperature superconductivity induced by high carrier concentrationsJ.B. Torrance, A. Bezinge, A.I. Nazzal and S.S.P. Parkin 291
Magnetism, specific heat, and pressure-dependent resistivity of the electron-doped compoundsLn2_^M^CuO4_y (Ln = Pr,Nd,Sm,Eu,Gd; M = Ce,Th)M.B. Maple, N.Y. Ayoub, T. Bjornholm, E.A. Early, S. Ghamaty, B.W. Lee, J.T. Markert,J.J. Neumeier and C.L. Seaman 296
A3.2. Theory ofhigh-Tc superconductors
Spin fluctuations, spin bags and the high Tc superconductivityJ.R. Schriefer, X.G. Wen and S.C. Zhang 300
Normal state anomalies and superconductive instability of Cu-O compoundsCM. Varma 303
The Cu d-d excitation model: studies of the insulating limitW. Weber, A.L. Shelankov and X. Zotos 307
Magnetic and pairing correlations in a three band Hubbard modelR.T. Scalettar 313
A4. Contributed papers (Monday, 24 July 1989)
A4.1. Flux creep - General superconductivity
Magnetic investigation of Bi2Sr2CaCu208+^ single crystals
E. Agostinelli, G. Balestrino, D. Fiorani, R. Muzi, P. Paroli, J. Tejada and A.M. Testa 319AC-susceptibility measurements on differently prepared YBaCuO-films as a tool to provide an
additional quality criterionCh. Neumann, P. Ziemann, J. Geerk and X.X. Xi 321
Coexistence of paramagnetism and superconductivity in (Gdo.2Cao.8)Sr2(Tl0.5Pbo.5)Cu2Oj,W.H. Lee, Y.T. Huang, R.S. Liu and P.T. Wu 323
Non-linearity of the YBa2Cu307_«s low field diamagnetic properties: multi-harmonic analysisF. Lera, R. Navarro, C. Rillo, J. Bartolome, J. Blasco, J. Garcia and L.A. Angurel 325
Effect of intergranular flux pinning on the magnetic properties of YBa2Cu307_^ and(Bi0.9Pbo.i)Sr1Ca1Cu,.8Ox
G.J. Russell, K.N.R. Taylor, D.N. Matthews, A. Bailey and R.A. Vaile 327Anomalous Hc l(T) behavior of single crystalline YBa2Cu3O7_<5
H. Adrian, W. Assmus, A. Hohr, J. Kowalewski, H. Spille and F. Steglich 329
xxvi Contents
Macroscopic magnetic properties of high Tc epitaxial Y1Ba2Cu3OA: thin filmsD.C. Bullock, T.J. Folkerts, P. Klavins and R.N. Shelton ' 331
AC magnetic hysteresis and Tc measurements in high Jc superconductorsC. Radhakrishnamurty, A.K. Grover, P.K. Mishra, P. Chaddah and G.V. Subbarao 333
Comparative study of magnetization in conventional and high Tc superconductorsB.V.B. Sarkissian, A.K. Grover, G. Balakrishnan, P.L. Paulose and R. Vijayaraghavan 335
Field and temperature dependence of ZFC, FC and REM magnetization in superconductorsA.K. Grover, P.L. Paulose, P. Chaddah and G. Ravikumar 337
Temperature and field dependence of the weak-link behavior in superconducting YBa2Cu307_x
S. Gjelmesli, L.T. Sagdahl, T. Laegreid and K. Fossheim 339
Low field investigations of single crystal Bi(2212) - DC magnetizationG. Shaw, S.D. Murphy and S.M. Bhagat 341
Discontinuous jump in transverse magnetization of the flux lattice in YBa2Cu3O7 crystals ob-served by torque magnetometryT.R. Chien, Z.Z. Wang and N.P. Ong 343
PAD investigations with 62Cu and 19F in La2_^SrxCuO4 and CuOH.-E. Mahnke, A. Berger, H.H. Bertschat, K. Biedermann, J. Erxmeyer, R. Kowallik,W. Muller, B. Spellmeyer, Ch. Stenzel and A. Weidinger 345
Time-decay of magnetisation in high Tc superconductorsP. Chaddah and G. Ravikumar 347
Anisotropy of high Tc superconducting crystals investigated by torque measurementsW. Andra, H. Danan and R. Hergt 349
Critical current and electronic properties of YBCO-Ag compoundsB. Dwir, M. Affronte and D. Pavuna 351
Interlayer coupling in high temperature superconductorsA.P. Malozemoff, L. Krusin-Elbaum and J.R. Clem 353
Limiting interface model for strongly coupled oxide ceramicsG. Blatter, J. Rhyner and H. Dersch 355
Electron irradiation effect on the intergrain critical field in ceramic YBa2Cu3O7
M. Konczykowski, F. Rullier-Albenque, H. Vichery and H. Pascard 357
Transport critical currents in Bi-Sr-Ca-Cu-O pellets and single crystalsA. De Ninno, P. Gislon, M. Marinelli, G. Paterno, U. Gambardella, P. Paroli and G. Balestrino 359
Critical current densities (up to 20 T) of high Tc REBa2Cu3O7, Bi2Sr2CaCu208, Tl2Ba2CaCu208
crystalsM. Guillot, J.L. Tholence, O. Laborde, M. Potel, P. Gougeon, H. Noel and J.C. Levet 361
Critical currents and flux creep in melt processed Bi2Sr2CaCu2O8 superconductorH.W. Neumiiller and G. Ries 363
Transport measurements on granular Y-Ba-Cu-O filmsM.A. Stan, S.A. Alterovitz, D. Ignjatovic, K.B. Bhasin, G.C. Valco and N.J. Rohrer 365
Properties of high Jc BiSrCaCuO and TIBaCaCuO thin filmH. Itozaki, K. Higaki, K. Harada, S. Tanaka, S. Yazu and K. Tada 367
Supercurrent lengthscale in sintered YBCO and critical state modelV. Calzona, M.R. Cimberle, C. Ferdeghini, M. Putti, A.S. Siri and R. Vaccarone 369
Contents xxvii
Superconducting fluctuation in Ba2[Y,Ln]Cu3O7 measured by magnetoresistanceA. Matsuda, T. Ishii, K. Kinoshita and T. Yamada 371
Influence of the local strains on the rounding of the resistivity near Tc in copper oxidesuperconductorsJ. Maza, C. Torron and F. Vidal 373
A phenomenological model for the rounding of the electrical conductivity above Tlo in poly-crystalline copper oxide superconductorsJ.A. Veira, G. Domarco, J. Maza, F. Miguelez, C. Torron and F. Vidal 375
Unconventional pairing in YBa2Cu3O7_rf?J.F. Annett, N. Goldenfeld and S.R. Renn 377
BiCaSrCuO superconductors: powder synthesis, wire fabrication and hot extrusion experimentsV.M. Polvi and K.J. Niemi 379
Preliminary study of oxide superconductors for wire fabricationK. Takahashi, S. Meguro, K. Uyeda, K. Kaiho and M. Umeda 381
Fibers of YBa2Cu3O7 by pendant drop melt extractionL.A. Schwartzkopf, J.E. Ostenson, K.S. Athreya and D.K. Finnemore 383
High Tc superconducting small loop antennaZ. Wu, M.J. Mehler, T.S.M. Maclean, M.J. Lancaster and C.E. Gough 385
Nonequilibrium hot-electron transport in optically irradiated YBCO filmsA.M. Kadin, W.R. Donaldson, P.H. Ballentine and R. Sobolewski 387
YBaCuO films on silicon substrates: fabrication, characterization, and use as phonon detectorsM. Obry, J. Tate, P. Berberich and H. Kinder 389
Photon detection by high-temperature superconducting films: fundamental limitsM.G. Forrester and J. Talvacchio 391
DC Josephson effect and critical currents of YBa2Cu3O7 and Tl2CaBa2Cu2O8
R. Kleiner, P. Miiller and K. Andres 393Noise properties of bulk 2-hole SQUIDS of YBCO and BSCCO
S.G. Hammond, S.P. Harrop, CM. Muirhead, C.E. Gough, N.McN. Alford and T.W. Button 395The investigation of rf-squids at liquid nitrogen temperatures
V.N. Polushkin and B.V. Vasiliev 397Surface magnetic impedance of granular superconductor
A.A. Golubov and A.E. Koshelev 399Investigation of the phase transition at HcX in 1OW-K superconductors
H.W. Weber, E. Seidl, F.M. Sauerzopf, M. Botlo, C. Laa, E. Mayerhofer, H.P. Wiesinger andJ. Rammer 401
Magnetization and upper critical fields of LaAl2 with dilute Gd impuritiesB. Vlcek, H.W. Weber, W. Pint and E. Schachinger 403
Complex susceptibility and penetration depth of the organic superconductor, (BEDT-TTF)2Cu(NCS)2
K. Kanoda, T. Takahashi and G. Saito 405Superconductivity under hydrostatic pressure in RE5Os4Si15 compounds (RE = Y, Tb, Er)
M. Kuboth, H.F. Braun, L. Schellenberg and J. Muller 407Magnetic moments and critical currents of superconducting Mo/V and Nb/Pd-multilayers
A.J. Vermeer, C.W. Hagen, D.G. de Groot, N.J. Koeman, J.H. Rector, H. van Leuken,R. Griessen, M.G. Karkut, T.M. Triscone and 0 . Fischer 409
xxviii Contents
The anomalous H-T phase diagram of Nb/NbTi superlattices determined by critical currentsand fieldsL. Antognazza, M.G. Karkut, J.-M. Triscone, V. Matijasevic, N. Missert, M.R. Beasley and0. Fischer 411
Evidence for unconventional superconductivity in UPt3: splitting of the specific heat anomalyat Tc
N.E. Phillips, R.A. Fisher, S. Kim, B.F. Woodfield, L. Taillefer, K. Hasselbach, J. Flouquet,A.L. Giorgi and J.L. Smith 413
UPt3 at very low temperatures: specific heat in high magnetic fieldsE. Schuberth, G. Hofmann, F. Gross and K. Andres 415
Ultrasonic attenuation in heavy fermion superconductorsL. Coffey 417
Experimental determination of the absolute value of the London penetration depth in the heavyfermion superconductors UBe13 and UPt3
F. Gross, K. Andres and B.S. Chandrasekhar 419Temperature reference points using cuprate superconductors
G.A. Candela, RJ . Soulen Jr., V.M. Browning and J.F. Schooley 421Y,Ba2Cu3O7 crystal and ceramic low field magnetic properties measured by high- Tc SQUID at
nitrogen temperaturesN.V. Zavaritsky and V.N. Zavaritsky 423
Dimensional effects in layered superconductorV.I. Dediu, A.G. Sandier and A.S. Sidorenko 425
Pressure effect on the transport properties of superconducting Li09Mo6O17 bronzeC. Escribe-Filippini, J. Beille, M. Boujida, J. Marcus and C. Schlenker 427
The low-temperature phase diagram of U^^Th^BenE. Felder, A. Bernasconi, H.R. Ott, Z. Fisk and J.L. Smith 429
Electronic and phonon-mediated gap modes in A15 compoundsR. Hackl, R. Kaiser and W. Glaser 431
Phase formation and superconducting properties of Nb-Al thin filmsK. Heinemann, R. Wordenweber, J. Hoffmann, Y. Luo, B. Ullmann and H.C Freyhardt 433
The dielectrization of the YBa2Cu3O7_<s ceramic surface layer by electric voltage pulseA.A. Zhukov, V.Yu. Kokosinsky, D.A. Komarkov, M.I. Lasyer and V.V. Moshchalkov 435
The properties of electric contacts for YBa2Cu3O7_<$ ceramicsR.I. Antonov, S.N. Gordeev, A.A. Zhukov, V.V. Moshchalkov, A.V. Lebedev, S.E. Mrost andV.N. Truhan 437
Oxidation thermodynamics and the presence of localized oxygen p-holes in YBa2Cu306+y
H. Verweij and L.F. Feiner 439Mechanisms of crystallization of amorphous Y!Ba2Cu3O7_x thin films during annealing in ox-
ygen and argon atmospheres: "in situ" measurementsG. Garry, D. Dubreuil, Y. Lemaitre, D. Dieumegard, J. Siejka and C Ortega 441
Magnetic penetration depth So and critical current density in Y-Ba-Cu-O crystalsN.V. Zavaritsky and V.N. Zavaritsky 443
Contents xxix
A4.2. Thermal properties - Structure/property relations
Ultrasonic attenuation and velocity in BiSrCaCuO high Tc superconductorJ. Hu, S. Zhang, Q. Zhang, W. Cai, T. Deng, L. Zhang, Y. He and J. Xiang 444
Ultrasonic attenuation anomaly of Tl-Ca-Ba-Cu-O at superconducting transitionK.J. Sun, W.P. Winfree, M.-F. Xu, M. Levy, B.K. Sarma, A.K. Singh, M.S. Osofsky andV.M. LeTourneau 446
Structural phase transition in single crystal La2_J5rxCuO4_J, superconductor studied by ultrasoundW. Ting, T. Laegreid, K. Fossheim, J.D. Axe and Y. Hidaka 448
Anomalous structural changes and elastic properties of bismuth oxide superconductorsY.S. He, J. Xiang, F.G. Chang, J.C. Zhang, A.S. He, H. Wang and B.-L. Gu 450
Anomalous Poisson ratio and bulk modulus in high-7c superconductorsP. Lemmens, C. Hiinnekes, M. Brakmann, S. Ewert, A. Comberg and H. Passing 452
Ultrasonic study on structural instability of Bi2Sr2CaiCu2O8 single crystalY.-N. Wang, J. Wu, J.-S. Zhu, H.-M. Shen, Y.-F. Yang and Z.-X. Zhao 454
Relationship between lattice instability and superconductivity in high Tc oxide superconductorsY.-N. Wang, X.-H. Chen, H.-M. Shen and L.-H. Sun 456
The variation of the acoustic resonance frequency in high-7^ ceramics in a DC magnetic fieldV.T. Dolgopolov, R.K. Nikolaev, L.V. Ovchinnikova and N.S. Sidorov 458
Low-temperature elastic constants of polycrystalline La2CuO4 and La185Sro.i5Cu04
H. Ledbetter, S.A. Kim, C.E. Violet and J.D. Thompson 460
Observation of phonon shifts in Bi2Sr2Ca!_xYxCu208 and related high temperaturesuperconductorsB. Renker, F. Gompf, E. Gering and D. Ewert 462
Phonons in YBa2Cu3O7_(5
W. Reichardt, N. Pyka, L. Pintschovius, B. Hennion and G. Collin 464Phonon density of states YBa2Cu3Ox
V.G. Bar'yakhtar, A.S. Vasil'kevich, P.G. Ivanitsky, V.T. Krotenko, A.N. Maistrenko,A.E. Morozovsky, V.M. Pan, M.V. Pasechnik and V.I. Slisenko 466
Specific heat measurements on multiphase Bi-Sr-Ca-Cu oxide and Bi-Pb-Sr-Ca-Cu oxidesuperconductorsM.K. Yu, J.P. Franck, M.A.-K. Mohamed, W.A. Miner, J. Jung and S. Gygax 468
Magnetic determination of the specific heat jump at Tc in YBa2Cu3O7_^G. Triscone, A. Junod and J. Muller 470
Nuclear heat capacity due to the static Cu-magnetic moments in the superconducting
N. Wada, Y. Nakamura and K.i. Kumagai 472Origin of the nuclear specific heats in high-rc superconductors
R. Caspary, M. Winkelmann and F. Steglich 474
Specific heat (1-330 K), magnetic susceptibility and Meissner effect of Tl-Ba-Ca-Cu-O samplesA. Junod, D. Eckert, G. Triscone, J. Muller and V.Y. Lee 476
Specific heat (1-330 K), magnetic susceptibility (5-250 K) and phonon DOS of CuO: a studyof the magnetic transitionsA. Junod, D. Eckert, G. Triscone, J. Muller and W. Reichardt 478
Specific heat (1-330 K), magnetic susceptibility and Meissner effect of Bi-(Pb)-Sr-Ca-Cu-OsamplesA. Junod, D. Eckert, G. Triscone, O. Brunner, J. Muller and Z. Zhao 480
xxx Contents
YBa2Cu3O7_^: improvement of the specific heat behavior at low temperatures and near Tc
A. Junod, D. Eckert, T. Graf, G. Triscone and J. Muller 482
Lattice and electronic specific heat of YBa2Cu3O7
J.E. Gordon, R.A. Fisher, S. Kim and N.E. Phillips 484
Specific heat of polycrystalline YBa2Cu3O7_^ in a magnetic fieldD.M. Ginsberg, M.E. Reeves, S.E. Stupp, T.A. Friedmann, F. Slakey and M.V. Klein 486
Specific heats of Tl-Ba-Ca-Cu-O superconductorsT. Atake, H. Kawaji, M. Itoh, T. Nakamura and Y. Saito 488
Contribution to specific heat and electrical conductivity of YBa2Cu3O7_,5 from fluctuationsT. Laegreid, P. Tuset, O.-M. Nes, M. Slaski and K. Fossheim 490
Specific heat, ac susceptibility, and dc conductivity in the Bio^Pbo.sCaiSr^ULgO^ superconductorM. Slaski, T. Laegreid, O.-M. Nes, S. GJ0lmesli, P. Tuset, K. Fossheim and A. Pajaczkowska 492
Specific heat of high-Tc YBa2(Cu3_^Mx)O7 with M = Cr or ZnS. Kim, R.A. Fisher, N.E. Phillips and J.E. Gordon 494
The specific heat anomalies at Tc of the BiSrCaCuO and TIBaCaCuO high temperaturesuperconductorsE. Braun, W. Schnelle, F. Seidler, P. Bohm, W. Braunisch, Z. Drzazga, S. Ruppel, H. Broicher,H. Geus, M. Galffy, B. Roden, I. Felner and D. Wohlleben 496
A systematic study of the specific heat anomaly in La2_j:Srj:CuO4
J.W. Loram, K.A. Mirza, W.Y. Liang and J. Osborne 498
The low temperature specific heat in single crystals of YBa2Cu3O7 and its magnetic fielddependenceJ. Baak, H.B. Brom, M.J.V. Menken and A.A. Menovsky 500
Specific heat of the high-T^ superconductor (Bi, 66Pb0.34)Ca2SrCu30|oR.A. Fisher, S. Kim, Y. Wu, N.E. Phillips, H.M. Ledbetter and K. Togano 502
Low temperature specific heat of single crystal Bi2Sr2Ca!Cu2Oz
T. Sasaki, Y. Muto, T. Shishido, T. Sasaki, T. Kajitani, M. Furuyama, N. Kobayashi andT. Fukuda 504
Sign-reversal thermopower in Bi2Sr2CaCu2Oy
M.P. Boiko, V.G. Kantser, L.A. Konopko and A.S. Sidorenko 506
Evidence for an intrinsic linear term in the T-dependence of the thermal conductivity of su-perconducting YBa2Cu307 and Bi2Sr2CaCu2O8 single crystalsG. Sparn, M. Baenitz, S. Horn, F. Steglich, W. Assmus, T. Wolf, A. Kapitulnik and Z.X. Zhao 508
Power dissipation and thermal relaxation in high temperature superconductorsP. Vassilev, V. Kovachev and M.D. Mateev 510
Thermal conductivity, electrical resistivity and specific heat of high-7c Bi,.4Pb0.6Sr2Ca2Cu3Ox
superconductorK. Mori, M. Sasakawa, T. Igarashi, Y. Isikawa, K. Sato, K. Noto and Y. Muto 512
Crystal chemistry of high- Tc superconductors of the Tl-Ba-Ca-Cu-O and Tl-Pb-Sr-Ca-Cu-OsystemsT. Zetterer, H.H. Otto, K. Meidenbauer and K.F. Renk 514
High temperature structural instability of the high-rc superconductor Pb2Sr2Y1_^CaxCu3O8+(jK. Kadowaki, A.C Moleman, M.J.V. Menken, H.W. Zandbergen, A.A. Menovsky andJ.J.M. Franse 516
Contents xxxi
Crystal structure and specific heat of YBa2(Cu1_xZnx)3O7_<5 (x - 0.01 ... 0.1, S= 0.9)G. Roth, P. Adelmann, R. Ahrens, B. Blank, H. Biirkle, F. Gompf, G. Heger, M. Hervieu,M. Nindel, B. Obst, J. Pannetier, B. Raveau, B. Renker, H. Rietschel, B. Rudolf and H. Wiihl 518
The relation between twins and optical domains in YBa2Cu3O7_<sK.N.R. Taylor, A. Nouruzi-Khorosani and S. Bosi 520
Magnetic aspects of the T' phase in the Nd2_^CexCuO4_<5 systemM.J. Rosseinsky and K. Prassides 522
Single crystal study of the 80 K superconductor YBa2Cu4O8
P. Bordet, J.L. Hodeau, R. Argoud, J. Muller, M. Marezio, J.C. Martinez, J.J. Prejean,J. Karpinski, E. Kaldis, S. Rusiecki and B. Bucher 524
Analysis of superconducting transitions in c«31 and c«37 A BSCCO systemsG. Calestani, M.G. Francesconi, G. Amoretti, C. Paracchini, E. Buluggiu, D.C. Giori,A. Valenti and A. Vera 526
The influence of many-body interaction on the oxygen ordering of the Cu-0 plane in Y-Ba-Cu-O superconductorsM. Wang and B. Cu 528
High resolution synchrotron X-ray powder diffraction study of the structure of Tl2Ba2CaCu2O8
M. Eibschutz, L.G. van Uitert, W.H. Grodkiewicz and D.E. Cox 530Defect structures preceding amorphization by ion irradiations in YBa2Cu307_^
M.A. Kirk, M.C. Frischherz, J.Z. Liu, L.L. Funk, L.J. Thompson, E.A. Ryan, S.T. Ockers andH.W. Weber 532
High Tc superconductivity and crystal structure of Pb-Sr-Y, Ca-Cu-0 systemV.S. Melnikov, A.G. Popov, N.V. Dan'ko, N.P. Pshentsova, D.P. Demenko and V.M. Pan 534
Structural investigations of single crystals of high Tc superconductors: La- and Y-phasesL.A. Muradyan, V.N. Molchanov, R.A. Tamazyan and V.I. Simonov 536
On the correlation of secondary structural effects, superconductivity and crystal field interactionin ErBa2Cu3Ox - new evidence for a charge transfer mechanism?B. Rupp, P. Allenspach, P. Fischer and A. Furrer 538
Theoretical studies of structural properties of the high-rc superconductor Y,Ba2Cu3O7_A:
S. Valkealahti and D.O. Welch 540Crystal structures of LaL1Sr,.9Cu2O583 and related compounds
R.A. Steeman, D.M. de Leeuw, G.P.J. Geelen and E. Frikkee 542X-ray absorption study of superconducting BaBi^^Pb^Os and BaBiO3
T. Claeson, J.B. Boyce, F. Bridges, T.H. Geballe, J.M. Remeika and A.W. Sleight 544On the orthorhombic to tetragonal phase transition in YBa2Cu3O7_x
B.E. Vigeland and S. Julsrud 546Oxygen ordering in Y1Ba2Cu3O7_A:
R. Beyers, B.T. Ahn, G. Gorman, V.Y. Lee, S.S.P. Parkin, M.L. Ramirez, K.P. Roche,J.E. Vazquez, T.M. Gur and R.A. Huggins 548
Preparation and characterization of single phase Bai_xKxBiO3
T.J. Folkerts, R.N. Shelton and H.B. Radousky 550Effects of deformation on shielding currents in YBa2Cu3O7_^
M.J. Kramer, R.W. McCallum and L.S. Chumbley 552Possible interfacial superconducting transport in CuCl: Si
B.L. Mattes 554
xxxii Contents
Structural phase diagram of the Ba, _^K^BiO3 systemS. Pei, J.D. Jorgensen, D.G. Hinks, B. Dabrowski, D.R. Richards, A.W. Mitchell, Y. Zheng,J.M. Newsam, S.K. Sinha, D. Vaknin and A.J. Jacobson 556
Fine Y-Ba-Cu-O superconducting filaments produced by suspension spinning methodT. Goto 558
Anisotropy effect detected by TEM in Y-Ba-Cu-O at low temperatureA. Cziraki, B. Fogarassy, S. Pekker, Gy. Hutiray, P. Sovak, L. Potoczky and V. Karel 560
Phonon transport phenomena in high-7c superconductorsN.V. Zavaritsky, A.V. Samoilov, A.A. Yurgens, V.S. Klochko and V.I. Makarov 562
Magnetism and superconductivity in YBa2(Cu1_xMJC)3O7 with M = Fe and CoR. Kuentzler, S. Vilminot, Y. Dossmann, T.L. Wen and C. His 564
Thermal expansion and heat capacity of Bi4Ca3Sr3Cu4O16+(5 at low temperaturesR. Villar, S. Bourgeal, S. Vieira, J.M. Gonzalez-Calbet and M. Vallet-Regi 566
Anisotropy of lattice vibration in uniaxially aligned high temperature superconductor Ba2EuCu307
observed by Mossbauer spectroscopyM. Taniwaki, T. Muraki and K. Shiramine 568
Detailed Mossbauer studies on YBa2Cu3_^Fe^O7_a (O-T phases) with low iron contentJ.L. Dormann, S. Sayouri, G.T. Bhandage, G. Priftis, H. Pankowska, O. Gorochov andR. Suryanarayanan 570
Thermal conductivity of the Bi2(Ca0.5Sr0.5)3Cu2OA:, Tl2Ba2Ca2Cu3Ox ceramics and ErBa2Cu3Ox
single crystalF.G. Aliev, V.V. Moshchalkov and V.V. Pryadun 572
BI. Plenary papers (Tuesday, 25 July 1989)
Bl.l. Organic superconductors
An overview of anorganic superconductor: K - ( B E D T - T T F ) 2 C U ( N C S ) 2
G. Saito 577
B1.2. Theory ofhigh-Tc superconductors
The electronic structure of La2CuO4: renormalization from density functional theory to strongcoupling modelsM. Schluter and M.S. Hybertsen 583
Correlated electron motion, flux states and superconductivityP. Lederer, D. Poilblanc and T.M. Rice 587
Hole superconductivity: review and some new resultsJ.E. Hirsch and F. Marsiglio 591
Contents xxxiii
B2. Contributed papers (Tuesday, 25 July 1989)
B2.1. Flux creep - Thin film synthesis
The DC magnetron sputter deposition process of YBa2Cu3O^ thin filmsT.I. Selinder, G. Larsson, U. Helmersson, S. Rudner and I. Petrov 599
Patterning of high Tc Y-Ba-Cu-O thin films deposited on bare siliconH.-U. Habermeier and G. Mertens 601
Thin films of "123" on silicon substratesT. Puzzer, Z.T. Zheng, S. Bosi, G.J. Russell and K.N.R. Taylor 603
Orientation dependent resistive transition broadening in magnetic field of YBa2Cu307_x thinfilmsC.-B. Eom, J.Z. Sun, S. Ryu, S.S. Laderman, K. Yamamoto, A. Kapitulnik and T.H. Geballe 605
Preparation and characterization of thin Y!Ba2Cu3O7_^ films made by DC magnetron sputteringA. Hohler, H. Neeb and C. Heiden 607
C-axis oriented Y2Ba2Cu3O7_JC films using the BaF2-methodM. Moske, K. Samwer, S. Dina and G. van Minnigerode 609
YBCO films on polycrystalline BeO substrates with TZ>11 KP. Bernstein, D. Roze and S. Herpin 611
Elaboration and characterization of superconducting Bi-Sr-Ca-Cu-O and Bi(Pb)-Sr-Ca-Cu-O thin films made by DC single target sputteringH. Raffy, S. Labdi, A. Vaures, J. Arabski, S. Megtert and J. Perriere 613
Initial stage of epitaxial growth of YBa2Cu3O7_^ thin filmsT. Terashima, Y. Bando, K. Iijima, K. Yamamoto, K. Hirata, K. Kamigaki and H. Terauchi 615
Effects of Pb-layer on the superconductivity of Bi-Ca-Sr-Cu-O systemS.M. Fu, H.H. Sung, H.C Yang, D.S. Lee and H.E. Horng 617
Superconductivity in Bi-Pb-Ca-Sr-Cu-O thin filmsS.M. Fu, H.C. Yang, F.C Chen, H.E. Horng and J.C. Jao 619
Y-Ba-Cu-O thin films on sapphire substratesH. Ohlsen, J. Hudner, L. Stolt and E. Johansson 621
In-situ growth of Y1BaCu3O7_A: films by molecular beam epitaxy with an activated oxygen sourceJ. Kwo, M. Hong, D.J. Treyor, R.M. Fleming, A.E. White, J.P. Mannaerts, R.C Farrow,A.R. Kortan and K.T. Short V 623
Electrical properties of YBa2Cu3O7 thin filmsJ.S. Satchell, R.G. Humphreys, P. Sidhu, N.G. Chew, S.W. Goodyear and J.A. Edwards 625
As deposited epitaxial Dy!Ba2Cu3O thin films by M.B.E.A. Schuhl, R. Cabanel, S. Koch, J. Siejka, M. Touzeau, J.P. Hirtz and G. Creuzet 627
Low-temperature method for thin superconducting film preparationV.M. Puzikov, A.V. Semyonov, D.I. Zosim, V.L. Dubonosov, L.S. Zolotovitskaya andR.F. Ramakayeva 629
Fabrication and properties of high- Tc films deposited on LaGaO3 and LaAlO3 substratesR. Sobolewski, P. Gierlowski, W. Kula, G. Jung, S. Zarembinski, M. Berkowski, A. Dabkowskiand A. Pajaczkowska 631
Superconducting (Rb,Ba)BiO3 thin films grown by molecular beam epitaxyE.S. Hellman, E.H. Hartford and T.T.M. Palstra 633
xxxiv Contents
TEM investigation on the crystal structure of the high-rc superconductor system Bi-Pb-Sr-Ca-Cu-O doped with SbB. Kabius, M.E. Gomez, P. Prieto, S. Thierfeldt and R.R. Arons 635
Interdiffusion between Si substrates and YBaCuO filmsQ.Y. Ma, X. Wu, M.T. Schmidt, E.S. Yang and C.-A. Chang 637
Optical emission studies and preparation of high Tc Tl-Ca-Ba-Cu-O thin filmsW.Y. Lee, J.R. Salem, V.Y. Lee, T.C Huang and R. Savoy 639
Effect of Pb doping on 110 K phase formation in BiSrCaCuO thin filmsJ. Wosik, M.F. Davis, J.C Wolfe, R. Krtanenburg, J. Williams, Y.Y. Sun and P.H. Hor 641
Structural properties of high Tc epitaxial Y!Ba2Cu3Ox thin filmsD.C Bullock, G. Gorman, J.R. Salem, C. Hwang, R. Savoy, V. Lee, W. Lee, T. Huang andA. Segmuller 643
"In-situ" sputter deposition of superconducting Bi-Sr-Ca-Cu-O thin filmsT.P. Thorpe, M.S. Osofsky, E.F. Skelton, S.B. Qadri and C.R. Gossett 645
Epitaxial growth and anisotropic transport properties of YBa2Cu3O7 thin filmsO. Brunner, J.-M. Triscone, M.G. Karkut, L. Antognazza, A.D. Kent, T. Driscoll, T. Boichatand 0 . Fischer 647
Properties of BiSrCaCuO films prepared by rf triode sputteringR.E. Soltis, W.T. Donlon, S. Shinozaki, R.M. Ager, C.R. Peters, E.M. Logothetis, M. Aslam,L.E. Wenger, J.T. Chen and R. Nelson 649
Preparation of in-situ superconducting YBCO thin films by single target magnetron sputteringC.E. Caley, J.P. Collman and W.A. Little 651
Transport critical currents in epitaxial Y!Ba2Cu307_^ thin filmsD.K. Christen, C.E. Klabunde, J.R. Thompson, H.R. Kerchner, S.T. Sekula, R. Feenstra andJ.D. Budai 653
Comparison between LaGaO3, LaAlO3, KTaO3 and SrTiO3 substrates for the epitaxial growthof YBa2Cu3O7_A: thin films by a "BaF2 process"R. Feenstra, J.D. Budai, M.D. Galloway and L.A. Boatner 655
Thin films of Y-Ba-Cu-O grown in-situ by co-evaporation and plasma oxidationA.B. Berezin, S. Pan, E. Ogawa, R.M. Silver and A.L. de Lozanne 657
YBa2Cu307 films grown on epitaxial MgO buffer layers on sapphireJ. Talvacchio, G.R. Wagner and H.C. Pohl 659
Distribution of activation energies in high temperature superconductorsR. Griessen, C.W. Hagen, J. Lensink and D.G. de Groot 661
Magnetic flux relaxation of epitaxial YBa2Cu3O7_,$ films at low temperaturesJ. Lensink, C.F.J, Flipse, J. Roobeek, R. Griessen and B. Dam 663
Logarithmic to nonlogarithmic flux creep transition and magnetic flux hardening in BiSrCaCuOsuperconducting ceramicsH. Safar, C. Duran, J. Guimpel, L. Civale, J. Luzuriaga, E. Rodriguez, F. de la Cruz,C. Fainstein, L.F. Schneemeyer and J.V. Waszczak 665
Multiple phases or multiple flux lattice melting temperatures: vibrating reed studies on Bi-basedceramicsA. Gupta, P. Esquinazi, H.F. Braun and E.H. Brandt 667
Flux flow resistivity in single crystal YBa2Cu3O7_5
W.K. Kwok, U. Welp, G.W. Crabtree, K.G. Vandervoort and J.Z. Liu 669
Contents xxxv
Critical current densities in textured thin films of Bi-Sr-Ca-Cu-oxideJ.T. Kucera, D.G. Steel, D.W. Face, J.M. Graybeal, T.P. Orlando and D.A. Rudman 671
Diagmagnetic shielding and flux creep in a Tl-Ba-Ca-Cu-O thin filmE.L. Venturini, J.F. Kwak, D.S. Ginley, R.J. Baughman and B. Morosin 673
Effects of magnetizing on flux pinning force for sintered YBCO superconductorS.Y. Ding, J.L. Yan, Z. Yu, K.X. Shi, H.W. Tong and L. Qiu 675
Comparison of flux pinning in superconducting Tl-Ca-Ba-Cu-O single crystals and thin filmM. Nakao, K. Kawaguchi, H. Furukawa, K. Shikichi and Y. Matsuta 677
,u+SR studies of lux mobility in the mixed state of Bi2Sr2CaCu2O8
B.J. Sternlieb, L.P. Le, G.M. Luke, Y.J. Uemura, J.H. Brewer, J.F. Carolan, P. Dosanjh,W.N. Hardy, R. Kadono, R.F. Kiefl, S.R. Kreitzman, T.M. Riseman, P.W. Schleger,M.R. Davis, C.E. Stronach, Y. Hidaka, T. Murakami, J. Gopalakrishnan, A.W. Sleight andA.R. Strzelecki 679
Study of flux flow in high Tc superconductorsS. Takacs and F. Gomory 681
Electric resistance in the mixed state of the high Tc oxide filmsN. Kobayashi, H. Kawabe, H. Iwasaki, K. Watanabe, H. Yamane, H. Kurosawa, H. Masumoto,T. Hirai, T. Matsushita and Y. Muto 683
Intergrain coupling and flux creep in textured Bi-based oxide superconductorH. Kumakura, K. Togano, H. Maeda and E. Yanagisawa 685
Vortex motion and time dependent magnetic responses in high Tc superconductorsJ.Z. Sun, C-B. Eom, B. Lairson, J.C Bravman, T.H. Geballe and A. Kapitulnik 687
Critical currents and magnetic relaxation in neutron irradiated Y123M.E. McHenry, J.O. Willis, M.P. Maley, J.D. Thompson, J.R. Cost and D.E. Peterson 689
The magnetic properties of superconducting Tl-Ba-Ca-Cu-O systemY. Zhang, X. Mao, L. Chen and X. Cao 691
Microstructure and superconductive glassy state in high-rc superconducting ceramicsY. Zhao and Q. Zhang 693
Low-field flux motion in single crystal Y,Ba2Cu3O7_^ and in other superconductorsA.C. Mota, A. Pollini, P. Visani and G. Juri 695
Scaling of the irreversible magnetization curves of YBaCuOE.R. Yacoby, Y. Wolfus, Y. Yeshurun, I. Felner and H. Sompolinsky 697
Flux creep limited current in YBa2Cu307_,s ceramics under applied fieldsU. Dai, L.R. Tessler, N. Hess, G. Deutscher, N. Bontemps, G. Vetter, F. Queyroux,R. Nahoum, M. Lagues and P. Mocaer 699
Observation of thermally activated flux motion in weak link structuresM.P. Maley, M.E. McHenry, J.O. Willis and M. McElfresh 701
Correlation between the in situ growth conditions of YBCO thin films and the thermodynamicstability criteriaR.H. Hammond and R. Bormann 703
On the fabrication of flat post-annealed YBa2Cu3O7_,5 filmsB. Dam and D. Scholten 705
Effect of the atmosphere annealing on the structure of Bi2Sr2CaCu2O8 thin films grown on(100 )SrTiO3 substratesA. Perrin, Z.Z. Li, J. Padiou and M. Sergent 707
xxxvi Contents
Bi-Sr-Ca-Cu-oxide thin films with Tc> 100 K and dc SQUIDSD.W. Face, J.T. Kucera, D.G. Steel, J.M. Graybeal, T.P. Orlando and D.A. Rudman 709
Molecular beam epitaxy growth of Bi-Sr-Ca-Cu-O thin filmsY. Nakayama, I. Tsukada, A. Maeda and K. Uchinokura 711
Superconducting YBa2Cu3O7 thin films grown in-situ by ion beam co-depositionB.J. Kellett, J.H. James, A. Gauzzi, B. Dwir and D. Pavuna 713
High Tc superconducting films grown by magnetron and laser-beam techniqueA.I. Golovashkin, E.V. Ekimov, S.I. Krasnosvobodtsev, V.P. Martovitsky and E.V. Pechen 715
B2.2. Superconducting properties - Theory (microscopic)
Anomalous field-dependence of Meissner fraction in bulk and successively pulverized Y-Ba-Cu-OR. Puzniak, Y. Zhang, K.V. Rao and S. Tyagi 717
Resistive transitions of Ni-doped Ba2YCu3O7 in high-magnetic fieldsK.A. Delin, E.J. McNiff Jr., S. Foner, T.P. Orlando, R.B. van Dover, L.F. Schneemeyer andJ.V. Waszczak 719
Superconductivity enhancement in the (Tl,Pb) (A,R)2CuO5 system (A=Sr, Ba; R=La, Pr, Nd)J.B. Shi, M.J. Shieh, T.Y. Lin and H.C. Ku 721
Fluctuations and critical fields in (Y-Sm) HTSCM. Carrera, X. Granados, J. Fontcuberta, X. Obradors, M. Vallet and J.M. Gonzalez-Calbet 723
Upper critical magnetic field of Y1_2jcCaJCThxBa2Cu3O7_<s
M. Andersson and O. Rapp 725Shielding anomalies in granular oxide superconductors
M. Borik, M. Chernikov, P. Ivanov, V. Osiko, V. Stepankin and V. Veselago 727
A magnetic and specific heat study of Bi2_A.PbArSr2Ca2Cu4O1,_x/2+j, high-7c superconductorsM. Rosenberg, W. Chojetzki, M. Mittag, R. Job, R. Wernhardt, H. Bach and P. Stauche 729
Upper critical field of Bi-Pb-Sr-Ca-Cu-O systemY. Zhang, X. Mao, H. Liu and L. Chen 731
Temperature dependence of the lower critical field of single crystal YBa2Cu3O7_^A. Umezawa, G.W. Crabtree, K.G. Vandervoort, U. Welp, W.K. Kwok and J.Z. Liu 733
The temperature and angular dependence of the upper critical field of YBa2Cu3O7_,5 crystalsU. Welp, W.K. Kwok, G.W. Crabtree, K.G. Vandervoort and J.Z. Liu 735
Electrical properties and Tc of Bi2CaSr2Cu2O8 up to pressures of 15 GPAE.N. van Eenige, R.J. Wijngaarden, H. Hemmes, J.J. Scholtz, J.J. de Kleuver and R. Griessen 737
Toward the true stress dependence of Tc for YBa2Cu3O69
U. Koch, J. Wittig and B. Gegenheimer 739Dependence of the magnetization of superconducting yttrium and thallium compounds on ox-
ygen content and high hdyrostatic pressureC. Allgeier, R. Sieburger, H. Gossner, J. Diederichs, H. Neumaier, W. Reith, P. Muller andJ.S. Schilling 741
Pressure effect on superconducting Ba1_xKxBiO3 and BaPb,_xBixO3
H. Uwe, T. Osada, A. Iyo, K. Murata and T. Sakudo 743Pressure dependence of Tc in Nd, 85Ce015CuO4
J.E. Schirber, E.L. Venturini, B. Morosin and D.S. Ginley 745
Contents xxxvii
Radiation defects and pressure effects on the critical current in YBa2Cu3O7 single crystalsM. Konczykowski, F. Rullier-Albenque and G. Collin 747
Low temperature electron irradiation of YBa2Cu307
H. Vichery, F. Rullier-Albenque, M. Konczykowski, H. Pascard, R. Kormann, G. Collin andD. Favrot 749
Magnetization of neutron irradiated YBa2Cu3O7_rf single crystalsF.M. Sauerzopf, H.P. Wiesinger, H.W. Weber, G.W. Crabtree and J.Z. Liu 751
Oxygen isotope effect in the superconductor YBa2Cu3O7_x
J.P. Franck, J. Jung, G.J. Salomons, W.A. Miner, M.A.-K. Mohamed, J. Chrzanowski,S. Gygax, J.C Irwin, D.F. Mitchell and I. Sproule 753
18O isotope effect on Tc in La2_;cSrcCuO4 as a function of xM.K. Crawford, M. Kunchur, W.E. Farneth, E.M. McCarron and S.J. Poon 755
Coulomb correlation effects in YBaCuO systemJ. Costa-Quintana, F. Lopez-Aguilar, S. Balle, J.S. Munoz and A. Sanchez 757
Dielectric response in high Tc superconductorsF. Lopez-Aguilar, J. Costa-Quintana, S. Balle, F. Febrero, M.T. Aurell, A. Sanchez andJ.S. Munoz 759
Competition and possible coexistence of antiferromagnetic and RVB states in 2D HeisenbergmodelH. Chen, Z. Su and L. Yu 761
The antiferromagnetic order in the Hubbard modelV.A. Ivanov and R.O. Zaitsev 763
Pairing in CuO2 driven by exchange interactions between carriers and localized Cu spinsE.B. Stechel and D.R. Jennison 765
The cuprate superconductors: narrow correlated-electron bands and interlayer pairing via plane-chain charge transferJ. Ashkenazi and C.G. Kuper 767
Consequences of Fermi surface geometryW.A. Harrison 769
Recent numerical results on the two dimensional Hubbard modelA. Parola, S. Sorella, S. Baroni, R. Car, M. Parinello and E. Tosatti 771
Wave function, spectrum and effective mass of holes in 2D quantum antiferromagnetZ. Su, Y. Li, W. Lai and L. Yu 773
Effective Hamiltonian for high Tc Cu oxidesH. Fukuyama and H. Matsukawa 775
Charged vortices in the negative U Hubbard modelL.F. Feiner and J. Zaanen 777
Competition of anharmonic electron-phonon and electron-electron interaction in ferroelectricand superconducting oxidesA. Bussmann-Holder, H. Biittner and A. Simon 779
Possible mechanism of superconductivity in electron superconducting cupratesH. Kamimura, S. Matsuno and K. Ishida 781
Quasiparticles and photoemission spectra in correlated fermion systemsP. Horsch, W.H. Stephan, K. van Szczepanski, M. Ziegler and W. von der Linden 783
xxxviii Contents
Itinerant vs. localized antiferromagnetism of CuO2 layersE. Arrigoni, G. Strinati and C. Castellani 785
On d-wave pairing in one band Hubbard modelN.M. Plakida, V.Yu. Yushankhai and I.V. Stasyuk 787
Oxygen hole pairing and clustering due to Cu-0 coulomb repulsion in high temperaturesuperconductorsM.W. Long and W. Barford 789
Topological excitations and phase transition hierarchy in strongly correlated electronic sytemsA. Protogenov 791
Superconducting correlations in the one- and two-band Hubbard modelsK.P. Jain, R. Ramakumar and C.C. Chancey 793
Superconductivity and interaction of band electrons with RVB ordered systemD.V. Fil' and O.I. Tokar' 795
Eliashberg equations analogue in Anderson model for HTSCD.V. Fil', D.O. Livdan and O.I. Tokar' 797
Formation, motion and high-temperature superconductivity of large bipolaronsD. Emin 799
Critical temperature and upper critical field of superconductors for different Fermi surface modelsW. Pint, M. Prohammer and E. Schachinger 801
Polaron theory of high-7c superconductorsA.S. Alexandrov 803
Fermi surface of the one-dimensional Hubbard model: finite-size effectsC. Bourbonnais, H. Nelisse, A. Reid and A.-M.S. Tremblay 805
Monte Carlo simulation for CuO2 layers: 3-band Hubbard modelG. Dopf, A. Muramatsu and W. Hanke 807
What is the essential many-body Hamiltonian for copper-oxide superconductors?J.F. Annett and R.M. Martin 809
Weak- and strong-coupling expansions for the multi-band Hubbard modelJ. Wagner, R. Putz, B. Ehlers, L. Lilly, A. Muramatsu and W. Hanke 811
Collective quantum tunneling model of high-rc superconductorsD. Zhou and N.S. Sullivan 813
S-wave pairing mediated by double excitation of triplet in two band systems with intermediateelectron correlationK. Nasu 815
CDW instability near the superconducting transition in YBa2Cu3O7_a
P. Hertel, J. Appel and J.C Swihart 817
Flux phases and superconductivityP. Lederer and T.M. Rice 819
Local spin screening in the high Tc superconductorsJ. Zaanen and O. Gunnarsson 821
Incommensurate magnetic phases in doped high Tc compoundsM. Gabay and P.J. Hirschfeld 823
Contents xxxix
Static magnetic order in electron-superconductor related compoundsG.M. Luke, L.P. Le, B.J. Sternlieb, Y.J. Uemura, J.H. Brewer, R. Kadono, R.F. Kiefl,S.R. Kreitzman, T.M. Riseman, M.B. Maple, CL. Seaman, K. Kakurai, S. Uchida, H. Takagi,Y. Tokura, Y. Hidaka, T. Murakami, J. Gopalakrishnan, A.W. Sleight and M.A. Subramanian 825
Magnetic and transport properties of superconducting (YBa2Cu3O7_(5)1_^Ag^ ceramicsO. Laborde, B. Souletie, M. Guillot, J.J. Capponi, P. Lejay, J.L. Tholence, A. Ermolieff,S. Marthon, B. Dwir and D. Pavuna 827
Magnetic excitations in La2CuO4
R.R.P. Singh 829Magnetic properties of Y-Ba-Cu-O ceramics undoped and doped with Ni and Dy
Gh. Ilonca, S. Simon, I. Ardelean, R. Redac, O. Cozar and I. Barbur 831Upper critical field and electronic structure features of Ho(Y)Ba2Cu3O7_x single-crystal films
E.V. Ekimov, A.I. Golovashkin, S.I. Krasnosvobodtsev, E.V. Pechen, N.P. Shabanova,S.V. Antonenko, V.F. Elesin, A.S. Molchanov and V.E. Zhuchkov 833