Pan, HuiLi, XinZhang, FanYang, Shengyuan A.2017-03-312017-03-312015-07-072015-07-071098-0121http://hdl.handle.net/10735.1/5345We 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.en©2015 American Physical SocietyGraphenePolarization (Electricity)SpintronicsMonomolecular filmsSolitonsArticlePan, 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.92.041404924