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Browse Journals & Magazines > Applied Physics Letters ...> Volume:98 Issue:2 Help

Tunneling transport of electrons on the surface of a topological insulator attached with a spiral multiferroic oxide

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2 Author(s)
Zhai, Feng ; Center for Statistical and Theoretical Condensed Matter Physics and Department of Physics, Zhejiang Normal University, Jinhua 321004, People''s Republic of China ; Mu, Peiyan

Your organization might have access to this article on the publisher's site. To check, click on this link:http://dx.doi.org/+10.1063/1.3543899 

We study the transport properties of Dirac fermions on the surface of a topological insulator attached with a spiral multiferroic oxide (SMO). For the spiral plane of the SMO parallel to the spiral axis and the surface normal, the proximity-induced exchange field causes a particle-hole asymmetry and a transmission gap near the Dirac point. The transmission gap interval depends on the spiral wave vector q. This fact together with the tunability of q by gate voltages indicates an electric switch with high on-off ratios. The dependence of the conductance on the orientation of the spiral plane is also examined.

Published in:
Applied Physics Letters  (Volume:98 ,  Issue: 2 )

Date of Publication: Jan 2011

Page(s):
022107 - 022107-3
ISSN :
0003-6951
Digital Object Identifier :
10.1063/1.3543899
Product Type:
Journals & Magazines
Date of Current Version :
17 January 2011
Issue Date :
Jan 2011

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