Role of a Fermion Condensate in the Structure of High-Temperature Pairing in Cuprates

被引：4

作者：

Khodel, V. A. ^{[1
,2
,3
]}

Clark, J. W. ^{[2
,3
,4
]}

Zverev, M. V. ^{[1
,5
]}

机构：

[1] Kurchatov Inst, Natl Res Ctr, Moscow 123182, Russia

[2] Washington Univ, McDonnell Ctr Space Sci, St Louis, MO 63130 USA

[3] Washington Univ, Dept Phys, St Louis, MO 63130 USA

[4] Univ Madeira, Ctr Ciencias Matemat, Funchal, Madeira, Portugal

[5] Moscow Inst Phys & Technol, Dolgoprudnyi 147000, Moscow Region, Russia

来源：

JETP LETTERS | 2017年 / 105卷 / 04期

基金：

俄罗斯基础研究基金会;

关键词：

PHASE-TRANSITIONS; QUASI-PARTICLES; NORMAL-STATE; SYSTEMS; SUPERCONDUCTIVITY; PSEUDOGAP;

D O I：

10.1134/S0021364017040099

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The anomalous properties of a pairing gap in cuprate superconductors have been explained under the assumption that their electron systems in the normal phase exhibit a fermion condensate, i.e., a set of dispersionless states close to the nominal Fermi surface. It has been shown that exactly the fermion condensate is responsible for D-state pairing in cuprates. More specifically, the effective Coulomb repulsion in the Cooper channel, which prevents the existence of superconductivity in normal metals in the S channel, makes it high-temperature in the D channel.

引用

页码：267 / 272

页数：6

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