Correlated topological insulators of Cooper pairs induced by proximity effect

Details Correlated topological insulators of Cooper pairs induced by proximity effect Correlated topological insulators of Cooper pairs induced by proximity effect

2011-08-31

arxiv.org/abs/1109.0017v1

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 1 figure

Scientific paper

We argue that a two-dimensional spin-orbit topological band-insulator with induced pairing interaction exhibits a superconductor-insulator quantum phase transition with inert high-energy fermionic excitations. The resulting paired insulator can be a topologically ordered "pseudogap" state of p-wave Cooper pairs, whose excitations have fractional charge, spin and generally non-Abelian exchange statistics. We discuss the qualitative properties of this unconventional state and propose a heterostructure device that could host it.

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