Possible marginality of the superconducting gap symmetry in the oxides

被引：5

作者：

Varelogiannis, G ^{[1
]}

机构：

[1] Fdn Res & Technol Hellas, Inst Elect Struct & Laser, Iraklion 71110, Crete, Greece

来源：

SOLID STATE COMMUNICATIONS | 1998年 / 107卷 / 08期

关键词：

D O I：

10.1016/S0038-1098(98)00225-7

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

It is pointed out that in systems having the electronic topology of high-T-c cuprate superconductors, isotropic s-wave electron-boson interaction in the momentum decoupling regime leads to either s or d-wave superconductivity depending on the conventional values of the Coulomb pseudopotential. Different high-T-c oxides may naturally have different gap symmetries having nevertheless the same pairing interaction and similar T(c)s. A new type of first order phase transition from s-wave to d-wave superconductivity (and vice-versa) is possible by adjusting the doping, in accordance with puzzling photoemission and Raman results where a transition from d-wave to s-wave is reported Bi2Sr2CaCu2O8 by overdoping. (C) 1998 Elsevier Science Ltd. All rights reserved.

引用

页码：427 / 431

页数：5

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