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

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 spatial...

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Bibliographic Details
Main Authors: Yuto Shibata, Manfred Sigrist
Format: Article
Language:English
Published: American Physical Society 2022-10-01
Series:Physical Review Research
Online Access:http://doi.org/10.1103/PhysRevResearch.4.043044
Description
Summary: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.
ISSN:2643-1564