Unambiguous probe of parity-mixing of Cooper pairs in noncentrosymmetric superconductors

TL;DR

This paper proposes an experimental method using crossed Andreev reflection to directly detect parity-mixing in Cooper pairs within noncentrosymmetric superconductors, providing a clear signature of parity-breaking.

Contribution

It introduces a novel experimental scheme that unambiguously identifies parity-mixing of Cooper pairs through non-local conductance measurements.

Findings

Non-local conductance reveals parity-breaking signatures.

Crossed Andreev reflection effectively probes Cooper pair symmetry.

Method offers a direct detection of parity-mixing in superconductors.

Abstract

We propose an experimental scheme to detect unambiguously parity-mxing of Cooper pairs in noncentrosymmetric superconductors, which utilizes crossed Andreev reflection processes between two oppositely spin-polarized normal metal leads and a noncentrosymmetric superconductor. It is demonstrated that a non-local conductance exhibits a clear signature of parity breaking of Cooper pairs, and thus, can be a direct probe for the parity-mixing.