Topological crystalline magnets: Symmetry-protected topological phases of fermions
Name
PhysRevB.95.081107.pdf
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345.46 KB
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Adobe PDF
Checksum (MD5)
0811a66ec8c1c692cf2c9e8823cb6e90
Author(s)
Watanabe, Haruki
Fu, Liang
Date Issued
February 2017
Journal
Physical Review B
Publisher
American Physical Society
Citation
Watanabe, Haruki, and Liang Fu. “Topological Crystalline Magnets: Symmetry-Protected Topological Phases of Fermions.” Physical Review B 95.8 (2017): n. pag. © 2017 American Physical Society
Version
Final published version
Abstract
We introduce a novel class of interaction-enabled topological crystalline insulators in two- and three-dimensional electronic systems, which we call “topological crystalline magnet.” It is protected by the product of the time-reversal symmetry T and a mirror symmetry or a rotation symmetry R. A topological crystalline magnet exhibits two intriguing features: (i) it cannot be adiabatically connected to any Slater insulator and (ii) the edge state is robust against coupling electrons to the edge. These features are protected by the anomalous symmetry transformation property (RT)[superscript 2]=−1 of the edge state. An anisotropic response to the external magnetic field can be an experimental signature.
MIT Department
Massachusetts Institute of Technology. Department of Physics
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DOI of Published Version
https://doi.org/10.1103/PhysRevB.95.081107
