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arXiv · 1810.12317

Intrinsically interacting topological crystalline insulators and superconductors

Alex Rasmussen·Yuan-Ming Lu
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Abstract

Motivated by recent progress in crystalline symmetry protected topological (SPT) phases of interacting bosons, we study topological crystalline insulators/superconductors (TCIs) of strongly interacting fermions. We construct a class of intrinsically interacting fermionic TCIs, and show that they are beyond both free-fermion TCIs and bosonic crystalline SPT phases. We also show how these phases can be characterized by symmetry protected gapless fermion modes on the corners/hinges of an open system.

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Alex Rasmussen, Yuan-Ming Lu. 2018-10-29. Intrinsically interacting topological crystalline insulators and superconductors. https://arxiv.org/abs/1810.12317

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