Controlled transport on the surface of a topological insulator by biased transverse electric field

被引：0

作者：

Da, Haixia ^{[1
,2
,3
]}

机构：

[1] Nanjing Univ Posts & Telecommun, Sch Elect Sci & Engn, Nanjing 210046, Jiangsu, Peoples R China

[2] Huaiyin Inst Technol, Sch Math & Phys, Huaian 223003, Peoples R China

[3] Natl Univ Singapore, Elect & Comp Engn Dept, Singapore 117576, Singapore

来源：

EPL | 2015年 / 111卷 / 03期

关键词：

STATES; BI2TE3;

D O I：

10.1209/0295-5075/111/30009

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report on the biased transverse electric field sensitive transport of Dirac fermions on the surface of a three-dimensional topological insulator modulated by magnetic superlattices. By using a scattering matrix method, we find that the transmission spectrum for both parallel and antiparallel configurations exhibits asymmetrical features. In addition, the analysis of conductances in different magnetic configurations allows us to obtain controlled magnetoresistence depending on the amplitude of the external electric field. These might make topological insulators good candidates for future spintronics. Copyright (C) EPLA, 2015

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页数：4

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