Scalable Majorana vortex modes in iron-based superconductors.

ABSTRACT: The iron-based superconductor FeTe _x Se_1-x is one of the material candidates hosting Majorana vortex modes residing in the vortex cores. It has been observed by recent scanning tunneling spectroscopy measurement that the fraction of vortex cores having zero-bias peaks decreases with increasing magnetic field on the surface of FeTe _x Se_1-x . The hybridization of two Majorana vortex modes cannot simply explain this phenomenon. We construct a three-dimensional tight-binding model simulating the physics of over a hundred Majorana vortex modes in FeTe _x Se_1-x . Our simulation shows that the Majorana hybridization and disordered vortex distribution can explain the decreasing fraction of th

SUBMITTER: Chiu CK 

PROVIDER: S-EPMC7048414 | biostudies-literature | 2020 Feb

REPOSITORIES: biostudies-literature