CMSP Section announces seminar on Thursday

[Cond.Matt. & Stat.Mech.Section]

SEMINAR on   Disorder and strong electron correlations

  

Thursday, 29 March -  11:30 a.m.



Luigi Stasi Seminar Room,  Leonardo Building - first floor

 

Piet BROUWER   ( Freie Universität Berlin )

 

"Majorana fermions and subgap states in spinless p-wave superconducting wires"

 

Abstract

 

Spinless p-wave superconducting wires can be in a topological phase in which they harbor Majorana bound states at their ends.  Although there are no known spinless p-wave superconductors in nature, several routes to the artificial creation of such systems have been proposed.  In this talk, I will discuss how non-idealities in some of the proposed routes, such as potential disorder and deviations from a strict one-dimensional limit, affect the topological phase.  In particular, I'll discuss how the topological phase can persist at weak disorder or for multichannel wires, although some of the signatures of the presence of Majorana fermions are obscured.