Friday, January 4, 2013

1301.0389 (Martin Stier et al.)

Nonequilibrium Rashba field driven domain wall motion in ferromagnetic
nanowires
   [PDF]

Martin Stier, Reinhold Egger, Michael Thorwart
We study the effects of spin-orbit interaction (SOI) on the current-induced motion of a magnetic (Bloch) domain wall in ultrathin ferromagnetic nanowires. The conspiracy of spin relaxation and SOI is shown to generate a novel strong nonequilibrium Rashba field, which is dominant even for moderate SOI. This field causes intricate spin precession and a transition from translatory to oscillatory wall dynamics with increasing SOI. We show that current pulses of different lengths can efficiently be used to control the domain wall motion.
View original: http://arxiv.org/abs/1301.0389

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