https://doi.org/10.1051/epjap/2013130310
Non-equilibrium spin-current induced by random Rashba field
A semi-classical approach
1
Department of Physics, Azarbaijan Shahid Madani University, 53714-161 Tabriz, Iran
2
Plasma & Condensed Matter Computational Research Laboratory, Azarbaijan Shahid Madani University, 53714-161 Tabriz, Iran
3
Department of Physics, Peyam-e-noor University, 19395-4697 Tehran, Iran
a e-mail: Phirouznia@azaruniv.ac.ir
Received:
29
June
2013
Revised:
2
November
2013
Accepted:
17
December
2013
Published online:
14
February
2014
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.
© EDP Sciences, 2014
