103 research outputs found
Spin relaxation torque in metallic ferromagnets
Spin relaxation torque in uniform metallic ferromagnets with the
spin-orbit interaction arising from random impurities is calculated
microscopically. is shown to be written by spatial derivatives of
the electric field, but is not always given as a divergence of a torque dipole
density. The result is due to the fast dissipation of the orbital angular
momentum, and thus a conserving spin current cannot be defined. It is discussed
that the term in the spin transfer torque can also be asymmetric
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