Experimental Detection of Sign-Reversal Pairing in Iron-Based Superconductors

TL;DR

This paper proposes an experimental method to detect sign-reversal pairing in iron-based superconductors using a modified Josephson corner-junction setup.

Contribution

It introduces a novel experimental approach to test the sign change of the order parameter in iron pnictides.

Findings

The proposed experiment can distinguish between sign-reversal and non-sign-reversal pairing.

It provides a practical way to verify the pairing symmetry in iron-based superconductors.

Abstract

We propose a modified Josephson corner-junction experiment which can test whether the order parameter in the iron pnictides changes sign between the electron and hole pockets of the Fermi surface.