Topological Phases Protected by Point Group Symmetry

We consider symmetry-protected topological (SPT) phases with crystalline point group symmetry, dubbed point group SPT (pgSPT) phases. We show that such phases can be understood in terms of lower-dimensional topological phases with on-site symmetry and that they can be constructed as stacks and array...

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Bibliographic Details
Main Authors: Hao Song, Sheng-Jie Huang, Liang Fu, Michael Hermele
Format: Article
Language:English
Published: American Physical Society 2017-02-01
Series:Physical Review X
Online Access:http://doi.org/10.1103/PhysRevX.7.011020