# Superconducting proximity effect and Majorana fermions at the surface of a topological insulator

**Authors:** Liang Fu, C. L. Kane  
**arXiv:** [0707.1692](https://arxiv.org/abs/0707.1692)  
**Date:** 2007-07-11  
**Summary page:** https://www.summarizepaper.com/fr/arxiv-id/0707.1692v3/

## 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 p_x+ip_y 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 non chiral 1 dimensional wire for Majorana fermions, and that circuits formed from these junctions provide a method for creating, manipulating and fusing Majorana bound states.