THEORY OF THE ISOTOPE EFFECT AND SUPERCONDUCTING TRANSITION TEMPERATURE IN HIGH-Tc OXIDES

被引:1
|
作者
Bechlaghem, A. [1 ]
Bourbie, D. [1 ]
机构
[1] Univ Oran, LSMC, Es Senia 31100, Algeria
来源
MODERN PHYSICS LETTERS B | 2011年 / 25卷 / 26期
关键词
Superconductivity; isotope coefficient; van Hove singularity; transition temperature; electron-phonon interaction; magnetic excitations; Debye energy; VAN-HOVE SINGULARITY; VANHOVE SINGULARITY; PENETRATION DEPTH; GAP RATIO; MODEL; LA2-XSRXCUO4; COEFFICIENT; SCENARIO; LA2CUO4; LATTICE;
D O I
10.1142/S0217984911027248
中图分类号
O59 [应用物理学];
学科分类号
摘要
Analytical expressions for the superconducting transition temperature T-c and the isotope coefficient alpha have been obtained for the case where the Fermi level is close to the van Hove singularity. In this approach, we consider two interactions, the first related to the phonons and the second relevant to the magnetic excitations. Our result shows that the isotope coefficient alpha decreases with the superconducting transition temperature T-c in qualitative agreement with experimental data.
引用
收藏
页码:2069 / 2078
页数:10
相关论文
共 50 条
  • [21] THEORY OF HIGH-TC SUPERCONDUCTIVITY IN OXIDES
    EMERY, VJ
    PHYSICAL REVIEW LETTERS, 1987, 58 (26) : 2794 - 2797
  • [23] OPTICAL STUDY OF HIGH-TC SUPERCONDUCTING COPPER OXIDES
    TAJIMA, S
    UCHIDA, S
    KANBE, S
    KITAZAWA, K
    FUEKI, K
    TANAKA, S
    JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, 1987, 26 : 1007 - 1008
  • [24] MODEL STUDY OF ANTIFERROMAGNETISM IN HIGH-TC SUPERCONDUCTING OXIDES
    OLES, AM
    ZAANEN, J
    JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1988, 76-7 : 568 - 570
  • [25] THERMODYNAMIC DESORPTION OF OXYGEN IN HIGH-TC SUPERCONDUCTING OXIDES
    BURGER, JP
    LESUEUR, L
    NICOLAS, M
    DAOU, JN
    DUMOULIN, L
    VAJDA, P
    JOURNAL DE PHYSIQUE, 1987, 48 (09): : 1419 - 1422
  • [26] MAGNETIC CORRELATIONS IN HIGH-TC OXIDES IN THE SUPERCONDUCTING STATE
    SHIRANE, G
    STRONG CORRELATION AND SUPERCONDUCTIVITY, 1989, 89 : 236 - 243
  • [27] MAGNETIZATION AND CRITICAL CURRENTS IN HIGH-TC SUPERCONDUCTING OXIDES
    NOGUCHI, S
    OKUDA, K
    SUGIYAMA, K
    YAMAGISHI, A
    DATE, M
    PHYSICA B, 1989, 155 (1-3): : 182 - 185
  • [28] MAJOR NORMAL AND SUPERCONDUCTING PARAMETERS OF HIGH-TC OXIDES
    KRESIN, VZ
    WOLF, SA
    PHYSICAL REVIEW B, 1990, 41 (07) : 4278 - 4285
  • [29] TRANSPORT-PROPERTIES OF HIGH-TC SUPERCONDUCTING OXIDES
    ISHII, H
    SATO, H
    KANAZAWA, N
    TAKAGI, H
    UCHIDA, S
    KITAZAWA, K
    KISHIO, K
    FUEKI, K
    TANAKA, S
    PHYSICA B & C, 1987, 148 (1-3): : 419 - 422
  • [30] BREAKDOWN OF MATTHIESSEN RULE IN THE HIGH-TC SUPERCONDUCTING OXIDES
    MARKIEWICZ, RS
    SOLID STATE COMMUNICATIONS, 1988, 67 (12) : 1175 - 1177