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Torque induced by spin‐polarized current in ferromagnetic single‐electron transistors
Author(s) -
Kowalik M.,
Wiśniewska J.,
Barnaś J.
Publication year - 2006
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.200562461
Subject(s) - condensed matter physics , magnetic moment , ferromagnetism , torque , electron magnetic dipole moment , spin magnetic moment , spin transfer torque , quantum tunnelling , spin (aerodynamics) , electron , current (fluid) , moment (physics) , physics , spin polarization , magnetization , magnetic field , quantum mechanics , thermodynamics
We present theoretical analysis of the current‐induced torque exerted on the magnetic moment of the central electrode (island) in a ferromagnetic single electron transistor with non‐collinear magnetic moments of the electrodes. The considerations are restricted to the sequential tunneling regime, and the charge and spin currents are calculated within the master equation approach. The torque is calculated from the net spin current absorbed by the island. The calculations are carried out in the limit of fast spin relaxation processes, when no nonequilibrium magnetic moment can build up on the island. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)