Majorana phi0 Junction in a Disordered Spin-orbit Coupling Nanowire with Tilted Magnetic Field

TL;DR

This paper investigates how a tilted magnetic field affects the current-phase relation in disordered Majorana Josephson junctions, revealing a robust $$ phase shift that persists despite disorder.

Contribution

It demonstrates that a tilted magnetic field induces a  phase shift in disordered Majorana junctions, showing robustness of -junction behavior against disorder.

Findings

Tilted magnetic field induces a  phase shift.

-junction behavior remains robust with disorder.

Current-phase relation exhibits pseudo-4 period in the clean limit.

Abstract

Majorana Josephson junctions in nanowire systems exhibit a pseudo-$4\pi$ period current-phase relation in the clean limit. In this work, we study how this current-phase relation responds to a tilted magnetic field in a disordered Majorana Josephson junction within the Bogoliubov-de Gennes approach. We show that the tilted magnetic field induces a $\phi_0$ phase shift to the current-phase relation. Most importantly, we find that this $\phi_0$-junction behavior is robust even in the presence of disorders.