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arXiv · 1103.6115

Aharonov-Casher effect in Bi$_{\rm 2}$Se$_{\rm 3}$ square-ring interferometers

Fanming Qu·Fan Yang·Jun Chen·Jie Shen·Yue Ding·Jiangbo Lu·Yuanjun Song·Huaixin Yang·Guangtong Liu·Jie Fan·Yongqing Li·Zhongqing Ji·Changli Yang·Li Lu
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Abstract

Electrical control of spin dynamics in Bi$_{\rm 2}$Se$_{\rm 3}$ was investigated in ring-type interferometers. Aharonov-Bohm and Altshuler-Aronov-Spivak resistance oscillations against magnetic field, and Aharorov-Casher resistance oscillations against gate voltage were observed in the presence of a Berry phase of $π$. A very large tunability of spin precession angle by gate voltage has been obtained, indicating that Bi$_{\rm 2}$Se$_{\rm 3}$-related materials with strong spin-orbit coupling are promising candidates for constructing novel spintronic devices.

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Fanming Qu, Fan Yang, Jun Chen, Jie Shen, Yue Ding, Jiangbo Lu, Yuanjun Song, Huaixin Yang, Guangtong Liu, Jie Fan, Yongqing Li, Zhongqing Ji, Changli Yang, Li Lu. 2011-03-31. Aharonov-Casher effect in Bi$_{\rm 2}$Se$_{\rm 3}$ square-ring interferometers. https://doi.org/10.1103/physrevlett.107.016802

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