Issue |
EPL
Volume 111, Number 3, August 2015
|
|
---|---|---|
Article Number | 30009 | |
Number of page(s) | 4 | |
Section | General | |
DOI | https://doi.org/10.1209/0295-5075/111/30009 | |
Published online | 31 August 2015 |
Controlled transport on the surface of a topological insulator by biased transverse electric field
1 Nanjing University of Posts & Telecommunications, School of Electronic Science & Engineering Nanjing 210046, Jiangsu, China
2 Huaiyin Institute of Technology, School of Mathematics & Physics - Huaian 223003, China, and Electrical and Computer Engineering Department, National University of Singapore 4 Engineering Drive 3, 117576, Singapore
Received: 14 January 2015
Accepted: 30 July 2015
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.
PACS: 03.65.Vf – Phases: geometric; dynamic or topological / 72.25.Dc – Spin polarized transport in semiconductors / 75.47.-m – Magnetotransport phenomena; materials for magnetotransport
© EPLA, 2015
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.