This title appears in the Scientific Report :
2015
Please use the identifier:
http://dx.doi.org/10.1103/PhysRevB.91.201401 in citations.
Please use the identifier: http://hdl.handle.net/2128/8642 in citations.
Topological crystalline insulator and quantum anomalous Hall states in IV-VI-based monolayers and their quantum wells
Topological crystalline insulator and quantum anomalous Hall states in IV-VI-based monolayers and their quantum wells
Different from the two-dimensional (2D) topological insulator, the 2D topological crystalline insulator (TCI) phase disappears when the mirror symmetry is broken, e.g., upon placing on a substrate. Here, based on a new family of 2D TCIs—SnTe and PbTe monolayers—we theoretically predict the realizati...
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Personal Name(s): | Niu, Chengwang (Corresponding Author) |
---|---|
Buhl, Patrick / Bihlmayer, Gustav / Wortmann, Daniel / Blügel, Stefan / Mokrousov, Yuriy | |
Contributing Institute: |
JARA-FIT; JARA-FIT Quanten-Theorie der Materialien; PGI-1 Quanten-Theorie der Materialien; IAS-1 |
Published in: | Physical Review B Physical review / B, 91 91 (2015 2015) 20 20, S. 201401 201401 |
Imprint: |
College Park, Md.
APS
2015
|
DOI: |
10.1103/PhysRevB.91.201401 |
Document Type: |
Journal Article |
Research Program: |
Controlling Configuration-Based Phenomena Controlling Spin-Based Phenomena |
Link: |
OpenAccess OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/8642 in citations.
Different from the two-dimensional (2D) topological insulator, the 2D topological crystalline insulator (TCI) phase disappears when the mirror symmetry is broken, e.g., upon placing on a substrate. Here, based on a new family of 2D TCIs—SnTe and PbTe monolayers—we theoretically predict the realization of the quantum anomalous Hall effect with a Chern number C=2 even when the mirror symmetry is broken. Remarkably, we also demonstrate that the considered materials retain their large-gap topological properties in quantum well structures obtained by sandwiching the monolayers between NaCl layers. Our results demonstrate that the TCIs can serve as a seed for observing robust topologically nontrivial phases. |