A Superconducting instability in the surface of a topological insulator

Alberto Cortijo

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arXiv · 1012.2008

A Superconducting instability in the surface of a topological insulator

Alberto Cortijo

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Abstract

It is argued that a superconducting instability appears in the electronic states on the surface of a topological insulator due purely to electromagnetic interactions. The discussion of this instability is based on the analysis of the effective Coulomb interaction and the assumption that the system behaves like a two dimensional Fermi liquid. It is shown that this superconducting instability appears in the p-wave channel (like in the pure QED$_{3}$ case) and an expression for the critical temperature of the transition is provided.

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Alberto Cortijo. 2010-12-09. A Superconducting instability in the surface of a topological insulator. https://arxiv.org/abs/1012.2008

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