Department of Physics Papers

Document Type

Journal Article

Date of this Version

3-6-2008

Comments

Suggested Citation:
L. Fu and C.L. Kane. (2008). "Superconducting Proximity Effect and Majorana Fermions at the Surface of a Topological Insulator." Physical Review Letters. 100, 096407.

© 2008 The American Physical Society
http://dx.doi.org/10.1103/PhysRevLett.100.096407

Abstract

We study the proximity effect between an s-wave superconductor and the surface states of a strong topological insulator. The resulting two-dimensional state resembles a spinless px + ipy superconductor, but does not break time reversal symmetry. This state supports Majorana bound states at vortices. We show that linear junctions between superconductors mediated by the topological insulator form a nonchiral one-dimensional wire for Majorana fermions, and that circuits formed from these junctions provide a method for creating, manipulating, and fusing Majorana bound states.

Date Posted: 25 January 2011

This document has been peer reviewed.