Thickness Dependence of the Quantum Anomalous Hall Effect in Magnetic Topological Insulator Films

被引:72
|
作者
Feng, Xiao [1 ,2 ]
Feng, Yang [1 ]
Wang, Jing [3 ,5 ]
Ou, Yunbo [2 ]
Hao, Zhenqi [1 ]
Liu, Chang [1 ]
Zhang, Zuocheng [1 ]
Zhang, Liguo [1 ,2 ]
Lin, Chaojing [2 ]
Liao, Jian [2 ]
Li, Yongqing [2 ]
Wang, Li-Li [1 ,4 ]
Ji, Shuai-Hua [1 ,4 ]
Chen, Xi [1 ,4 ]
Ma, Xucun [1 ,4 ]
Zhang, Shou-Cheng [3 ]
Wang, Yayu [1 ,4 ]
He, Ke [1 ,4 ]
Xue, Qi-Kun [1 ,4 ]
机构
[1] Tsinghua Univ, Dept Phys, State Key Lab Low Dimens Quantum Phys, Beijing 100084, Peoples R China
[2] Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China
[3] Stanford Univ, Dept Phys, Stanford, CA 94305 USA
[4] Collaborat Innovat Ctr Quantum Matter, Beijing 100084, Peoples R China
[5] Fudan Univ, Dept Phys, State Key Lab Surface Phys, Shanghai 200433, Peoples R China
基金
中国国家自然科学基金;
关键词
STATE; REALIZATION; DISORDER;
D O I
10.1002/adma.201600919
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The evolution of the quantum anomalous Hall effect with the thickness of Cr-doped (Bi,Sb)(2)Te-3 magnetic topological insulator films is studied, revealing how the effect is caused by the interplay of the surface states, band-bending, and ferromagnetic exchange energy. Homogeneity in ferromagnetism is found to be the key to high-temperature quantum anomalous Hall material.
引用
收藏
页码:6386 / +
页数:6
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