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  • Open Access

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

Yuto Shibata1,2,* and Manfred Sigrist2

  • 1Condensed Matter Theory Group, Paul Scherrer Institut, 5232 Villigen PSI, Switzerland
  • 2Institute for Theoretical Physics, ETH Zürich, 8093 Zürich, Switzerland

  • *yshibata@phys.ethz.ch
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Phys. Rev. Research 4, 043044 – Published 18 October, 2022

DOI: https://doi.org/10.1103/PhysRevResearch.4.043044

Abstract

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.

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References (25)

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Phys. Rev. Research 4, 043044– Published 18 October, 2022
  • Received 30 May 2022
  • Revised 25 August 2022
  • Accepted 26 August 2022
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