TY - JOUR
T1 - Perfect valley filter in a topological domain wall
AU - Pan, Hui
AU - Li, Xin
AU - Zhang, Fan
AU - Yang, Shengyuan A.
N1 - Publisher Copyright:
© 2015 American Physical Society.
PY - 2015/7/7
Y1 - 2015/7/7
N2 - 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.
AB - 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.
UR - https://www.scopus.com/pages/publications/84937840637
U2 - 10.1103/PhysRevB.92.041404
DO - 10.1103/PhysRevB.92.041404
M3 - 文章
AN - SCOPUS:84937840637
SN - 1098-0121
VL - 92
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 4
M1 - 041404
ER -