A two-band model for p-wave superconductivity

被引：11

作者：

Caldas, Heron ^{[1
]}

Batista, F. S. ^{[1
]}

Continentino, Mucio A. ^{[2
]}

Deus, Fernanda ^{[3
]}

Nozadze, David ^{[4
]}

机构：

[1] Univ Fed Sao Joao Del Rei, Dept Ciencias Nat, Praca Dom Helvecio 74, BR-36301160 Sao Joao Del Rei, MG, Brazil

[2] Ctr Brasileiro Pesquisas Fis, Rua Dr Xavier Sigaud 150, BR-22290180 Rio De Janeiro, RJ, Brazil

[3] Univ Estado Rio de Janeiro, Dept Matemat Fis & Comp, Fac Tecnol, Rodovia Presidente Dutra Km 298, BR-27537000 Resende, RJ, Brazil

[4] Cisco Syst Inc, San Jose, CA 95134 USA

来源：

ANNALS OF PHYSICS | 2017年 / 384卷

关键词：

Superconductors; Multiband superconductivity; Spin-singlet pairing; Spin-triplet pairing; Superconducting order parameter; Superconducting phase transition; PRESSURE; CECOIN5; MGB2;

D O I：

10.1016/j.aop.2017.07.006

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In this paper we study the effects of hybridization in the superconducting properties of a two-band system. We consider the cases that these bands are formed by electronic orbitals with angular momentum, such that, the hybridization V(k) among them can be symmetric or antisymmetric under inversion symmetry. We take into account only intra-band attractive interactions in the two bands and investigate the appearance of an induced inter-band pairing gap. We show that (inter-band) superconducting orderings are induced in the total absence of attractive interaction between the two bands, which turns out to be completely dependent on the hybridization between them. For the case of antisymmetric hybridization we show that the induced inter-band superconductivity has a p-wave symmetry. (C) 2017 Elsevier Inc. All rights reserved.

引用

页码：211 / 224

页数：14

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