Density of states near a vortex core in ferromagnetic superconductors: Application to STM measurements

TL;DR

This paper numerically studies the local density of states near vortex cores in ferromagnetic superconductors, exploring effects of spin band contributions and pairing symmetries to aid interpretation of STM experiments.

Contribution

It provides new insights into how spin band weights and pairing symmetries influence the LDOS near vortex cores in ferromagnetic superconductors.

Findings

LDOS varies with spin band contributions

Pairing symmetry affects vortex core states

Results aid interpretation of STM measurements

Abstract

We investigate numerically the local density of states (LDOS) in the vicinity of a vortex core in a ferromagnetic superconductor. Specifically, we investigate how the LDOS is affected by the relative weight of the spin bands in terms of the superconducting pairing, and we also examine the effect of different pairing symmetries for the superconducting order parameter. Our findings are directly related to scanning tunneling microscopy measurements and may thus be highly useful to clarify details of the superconducting pairing in recently discovered ferromagnetic superconductors.