Cross-correlated responses of topological superconductors and superfluids

Kentaro Nomura, Shinsei Ryu, Akira Furusaki, Naoto Nagaosa

Research output: Contribution to journalArticle

73 Citations (Scopus)

Abstract

We study nontrivial responses of topological superconductors and superfluids to the temperature gradient and rotation of the system. In two-dimensional gapped systems, the Strěda formula for the electric Hall conductivity is generalized to the thermal Hall conductivity. Applying this formula to the Majorana surface states of three-dimensional topological superconductors predicts cross-correlated responses between the orbital angular momentum and thermal polarization (entropy polarization). These results can be naturally related to the gravitoelectromagnetism description of three-dimensional topological superconductors and superfluids, analogous to the topological magnetoelectric effect in Z 2 topological insulators.

Original languageEnglish
Article number026802
JournalPhysical review letters
Volume108
Issue number2
DOIs
Publication statusPublished - 2012 Jan 12

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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