Interacting fermionic topological insulators/superconductors in three dimensions
Name
PhysRevB.89.195124.pdf
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192.76 KB
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Adobe PDF
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Author(s)
Wang, Chong
Todadri, Senthil
Date Issued
May 2014
Journal
Physical Review B
Publisher
American Physical Society
Citation
Wang, Chong, and T. Senthil. “Interacting Fermionic Topological Insulators/superconductors in Three Dimensions.” Phys. Rev. B 89, no. 19 (May 2014). © 2014 American Physical Society
Version
Final published version
Abstract
Symmetry protected topological (SPT) phases are a minimal generalization of the concept of topological insulators to interacting systems. In this paper, we describe the classification and properties of such phases for three-dimensional (3D) electronic systems with a number of different symmetries. For symmetries representative of all classes in the famous 10-fold way of free-fermion topological insulators/superconductors, we determine the stability to interactions. By combining with results on bosonic SPT phases, we obtain a classification of electronic 3D SPT phases for these symmetries. In cases with a normal U(1) subgroup we show that this classification is complete. We describe the nontrivial surface and bulk properties of these states. In particular, we discuss interesting correlated surface states that are not captured in a free-fermion description. We show that in many, but not all, cases, the surface can be gapped while preserving symmetry if it develops intrinsic topological order.
MIT Department
Massachusetts Institute of Technology. Department of Physics
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1103/PhysRevB.89.195124
