Topological invariants of time reversal invariant superconductors

Rahul Roy

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Topological invariants of time reversal invariant superconductors

Rahul Roy

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Abstract

The topological invariants of gapped time reversal invariant lattice superconductors are studied by mapping the superconducting mean field Hamiltonian to a Bloch Hamiltonian. There is a single $Z_2 $ invariant in two dimensions and four such invariants in three dimensions. We briefly discuss the properties of states with non-trivial topological invariants.

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Rahul Roy. 2006-08-02. Topological invariants of time reversal invariant superconductors. https://arxiv.org/abs/cond-mat/0608064

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