Wonkee Kim, F. Marsiglio
Published 2003-10-16Version 1
The spin torque exerted on a magnetic moment is a reaction to spin filtering when spin-polarized electrons interact with a thin ferromagnetic film. We show that, for certain conditions, a spin transmission resonance (STR) gives rise to a failure of spin filtering. As a consequence, no spin is transfered to the ferromagnet. The condition for STR depends on the incoming energy of electrons and the thickness of the film. For a simple model we find that when the STR condition is satisfied, the ferromagnetic film is transparent to the incoming electrons.
Crossover between fast and slow excitation of magnetization by spin torque
Impact of surface anisotropy on the spin-wave dynamics in thin ferromagnetic film
A simple model of Coulomb disorder and screening in graphene
