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Spin torque and spin current induced by the Rashba and Dresselhaus couplings inside the domain wall in non‐adiabatic transport regime
Author(s) -
Ghamari F.,
Phirouznia A.
Publication year - 2012
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.201147608
Subject(s) - condensed matter physics , physics , spin (aerodynamics) , torque , current (fluid) , adiabatic process , spin hall effect , work (physics) , domain wall (magnetism) , spin polarization , magnetic field , quantum mechanics , magnetization , electron , thermodynamics
Spin–orbit induced spin torque and spin current in a smooth domain wall (DW) are theoretically investigated. We have analyzed the effect of the Rashba and Dresselhaus interactions on DW spin torque and spin current in the presence of magnetic impurities within the Boltzmann semi‐classical model. It has been previously shown that in the non‐equilibrium regime, the Rashba and Dresselhaus couplings can not be responsible for spin‐current and both transverse and longitudinal spin‐currents identically vanish. In the present work it has been found out that in the case of non‐collinear magnetic structures such as DW, Rashba, and Dresselhaus couplings can generate and control both components of the spin current. Results of this investigation verify that the spin current of the DW strongly depends on density of impurities and non‐adiabaticity of transport process. In addition results of the current work reveals that manipulation of the DW displacement can be realized by the Rashba and Dresselhaus couplings.