Work

Topological Superconducting Phases in a Strained Altermagnet-Superconductor Heterostructure

Year: 2026

Type: preprint

Abstract: We investigate topological superconductivity in a heterostructure consisting of a two-dimensional $s$-wave superconductor and a $d$-wave altermagnet with Rashba spin-orbit coupling. In particular, we study the effects of strain and hopping anisotropy on the topological superconducting phases. By calculating the Chern number, we obtain topological phase diagrams as functions of the chemical potential and the strength of the effective magnetic field induced by the magnetic proximity effect. We find that strain-induced lattice distortion allows topological superconducting phases to emerge over a broad parameter region. Our findings suggest that strain that lowers symmetry can serve as a route to realizing topological superconductivity in altermagnet-superconductor heterostructures.

Source: arXiv (Cornell University)

DOI: 10.48550/arxiv.2609.30791

Authors: Yoshizawa, Keita, Okugawa, Ryo, Tohyama, Takami

Institution: Tokyo University of Science

Language: English

Topic: Topological Materials and Phenomena

Subfield: Condensed Matter Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funder: Japan Society for the Promotion of Science

Award: G7658981906

OpenAlex ID: W7214666482

Cites: 1

Cited by:

Related to: 10