By Topic

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

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

The purchase and pricing options are temporarily unavailable. Please try again later.
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 )