Topological solitons in three-band superconductors with broken time reversal symmetry

TL;DR

This paper demonstrates that three-band superconductors with broken time reversal symmetry can host stable topological solitons carrying magnetic flux, which could serve as experimental indicators of symmetry breaking.

Contribution

It introduces the existence of stable topological solitons in three-band superconductors with broken time reversal symmetry, highlighting their potential experimental detectability.

Findings

Stable topological solitons exist with slightly higher energy than vortices.

Such solitons can be induced by fluctuations or phase transition quenching.

They provide a possible experimental signature of time reversal symmetry breaking.

Abstract

We show that three-band superconductors with broken time reversal symmetry allow magnetic flux-carrying stable topological solitons which have only a slightly higher energy than ordinary vortices. Therefore they can be induced by fluctuations or quenching the system through a phase transition. It can provide an experimental signature of the time reversal symmetry breakdown.