1110.3667 (K. Hasanirokh et al.)

Acoustic phonons mediated non-equilibrium spin current in the presence
of Rashba and Dreesselhaus spin-orbit couplings    [PDF]

K. Hasanirokh, A. Phirouznia

The influence of the electrons interaction with longitudinal acoustic phonons on magnetoeletric and spin-related transport effects are investigated. The physical system under consideration has been assumed to be a two dimensional electron gas system with both Rashba and Dreesselhaus spin-orbit couplings. In the works which have been previously performed in this field it has been shown that in the non-equilibrium regime, the Rashba and Dreesselhaus couplings can not be responsible for spin-current where in the absence of other interactions such as lattice vibrations identically vanishes. In the current work we have employed a semi-classical method by using the Boltzmann approach. It was shown that the spin-current of the system, in general, does not go all the way to zero at any value of the spin-orbit couplings. It was also shown that the spin accumulation of the system can be influenced by the electron-phonon coupling.

View original: http://arxiv.org/abs/1110.3667