Perfect Valley Filter in a Topological Domain Wall

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Perfect Valley Filter in a Topological Domain Wall

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Title: Perfect Valley Filter in a Topological Domain Wall
Author(s):
Pan, Hui;
Li, Xin;
Zhang, Fan (UT Dallas);
Yang, Shengyuan A.
Item Type: Article
Keywords: Show Keywords
Abstract: We propose a realization of perfect valley filters based on the chiral domain-wall channels between a quantum anomalous Hall insulator and a quantum valley Hall insulator. Uniquely, all these channels reside in the same valley and propagate unidirectionally, 100% valley-polarizing passing-by carriers without backscattering. The valley index, the chirality, and the number of the channels are protected by topological charges, controllable by external fields, and detectable by circular dichroism.
Publisher: Amer Physical Soc
ISSN: 1098-0121
Persistent Link: http://hdl.handle.net/10735.1/5345
http://dx.doi.org/10.1103/PhysRevB.92.041404
Bibliographic Citation: Pan, Hui, Xin Li, Fan Zhang, and Shengyuan A. Yang. 2015. "Perfect valley filter in a topological domain wall." Physical Review B 92(4), doi: 10.1103/PhysRevB.92.041404
Terms of Use: ©2015 American Physical Society
Sponsors: NSFC (grant no. 11174022); Singapore University of Technology and Design (SUTD-SRG-EPD2013062).

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