Majorana bound states in magnetic skyrmions imposed onto a superconductor

TKM Institutsseminar

Vortragender:

Stefan Rex

Datum:

24.01.2019 14:00

Ort:

Room 10.01, 10th Floor, Bldg. 30.23, KIT Campus South

Zugehörigkeit:

KIT

Gastgeber:

Prof. Dr. Alexander Mirlin

Abstract

We consider a two-dimensional superconductor exchange-coupled to the magnetic texture of a close-by chiral magnetic layer. In particular, we study how magnetic skyrmions can induce the formation of Majorana bound states (MBS) in the superconductor, where we focus on realistic skyrmions with winding number one. We show that MBS can be supported if a vortex is pinned to the skyrmion core. In addition, we consider a chain of skyrmions, which may host MBS at its ends. In light of recent experimental progress on the manipulation of skyrmions, such systems are promising candidates to achieve direct spacial control of MBS.