Strain modulation effects on the topological properties of a chiral p-wave superconductor

被引：0

作者：

Shibata, Yuto ^{[1
,2
]}

Sigrist, Manfred ^{[2
]}

机构：

[1] Paul Scherrer Inst, Condensed Matter Theory Grp, CH-5232 Villigen, Switzerland

[2] Swiss Fed Inst Technol, Inst Theoret Phys, CH-8093 Zurich, Switzerland

来源：

PHYSICAL REVIEW RESEARCH | 2022年 / 4卷 / 04期

基金：

瑞士国家科学基金会;

关键词：

Modulation - Seismic waves - Superconducting materials - Topology;

D O I：

10.1103/PhysRevResearch.4.043044

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present a study of strain modulation effects on electronic structures of a two-dimensional single-band chiral p-wave superconductor within the BCS mean-field scheme. We employ a lattice model and solve the Bogolyubov-de Gennes equations numerically. Implementing strain modulations through spatially varying hopping matrix elements, we observe the appearance of spontaneous supercurrents from the resulting spatial modulation of order parameter amplitudes. Moreover, sufficiently strong strain modulation induces the formation of topologically distinct domains within the system and causes the appearance of chiral edge modes, which is captured by spectral functions and local Chern markers.

引用

页数：10

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