Eur. Phys. J. Appl. Phys.
Volume 65, Number 2, February 2014
|Number of page(s)||8|
|Section||Spintronics, Magnetism and Superconductivity|
|Published online||14 February 2014|
Non-equilibrium spin-current induced by random Rashba field
A semi-classical approach
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
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
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