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Non-equilibrium spin-current induced by random Rashba field

A semi-classical approach

Published online by Cambridge University Press:  14 February 2014

Arash Phirouznia  and
Vahideh Tolouei Gavgani
Arash Phirouznia*
Affiliation:
Department of Physics, Azarbaijan Shahid Madani University, 53714-161 Tabriz, Iran Plasma & Condensed Matter Computational Research Laboratory, Azarbaijan Shahid Madani University, 53714-161 Tabriz, Iran
Vahideh Tolouei Gavgani
Affiliation:
Department of Physics, Peyam-e-noor University, 19395-4697 Tehran, Iran
*
ae-mail: Phirouznia@azaruniv.ac.ir
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Abstract

The influence of inhomogeneous Rashba interaction on spin-transport of two-dimensional electron gas system (2DEG) is investigated. In the works which have been previously performed in this field it has been shown that in the non-equilibrium regime, the Rashba and Dresselhaus couplings cannot be responsible for spin-current and both transverse and longitudinal components of the spin-current identically vanish. In the present work by using a semi-classical method it was found out that a random Rashba field interaction cannot be considered as a underestimate effect on spin-dependent mechanisms. Regarding the inhomogeneous distribution of the Rashba field it was shown that the spin-current of the system, in general, does not go all the way to zero.

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 65 , Issue 2 , February 2014 , 20601
Copyright
© EDP Sciences, 2014

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