Topological superconductivity - Spin-polarized currents and Majorana fermions

Datum: 21 april 2016

Locatie: University of Antwerp - Campus Groenenborger - Room U.247 - Groeneborgerlaan 171 - 2000 Antwerpen

Tijdstip: 15 - 16 uur

Organisatie / co-organisatie: Condensed Matter Theory

Korte beschrijving: CMT seminar presented by Kristofer Bjornson (Uppsala University)

Abstract
We investigate zero-, one-, and two-dimensional configurations of ferromagnetic impurities deposited at the surface of an ordinary s-wave superconductor with Rashba spin-orbit interaction arising from surface effects. The model describes a topological superconductor in one and two dimensions, and in the one-dimensional wire configuration this leads to the appearance of Majorana fermions at the wire endpoints. In particular, we focus on understanding persistent spin-polarized currents that are present in the system, and how these currents can help explain why also the Majorana fermions are spin-polarized.

Kristofer Bjornson, Materials Theory, Uppsala University



Contact e-mail: lucian.covaci@uantwerpen.be

Url: http://cmt.uantwerpen.be