Intrinsic Coupling between Current and Domain Wall Motion in (Ga,Mn)As

Details Intrinsic Coupling between Current and Domain Wall Motion in (Ga,Mn)As Intrinsic Coupling between Current and Domain Wall Motion in (Ga,Mn)As

2008-11-13

arxiv.org/abs/0811.2235v2

Phys. Rev. Lett. 102, 256601 (2009)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Final version accepted by Physical Review Letters

Scientific paper

10.1103/PhysRevLett.102.256601

We consider current-induced domain wall motion and, the reciprocal process, moving domain wall-induced current. The associated Onsager coefficients are expressed in terms of scattering matrices. Uncommonly, in (Ga,Mn)As, the effective Gilbert damping coefficient $\alpha_w$ and the effective out-of-plane spin transfer torque parameter $\beta_w$ are dominated by spin-orbit interaction in combination with scattering off the domain wall, and not scattering off extrinsic impurities. Numerical calculations give $\alpha_w \sim 0.01$ and $\beta_w \sim 1$ in dirty (Ga,Mn)As. The extraordinary large $\beta_w$ parameter allows experimental detection of current or voltage induced by domain wall motion in (Ga,Mn)As.

Affiliated with

Also associated with

No associations

Rating

Intrinsic Coupling between Current and Domain Wall Motion in (Ga,Mn)As does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Intrinsic Coupling between Current and Domain Wall Motion in (Ga,Mn)As, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Intrinsic Coupling between Current and Domain Wall Motion in (Ga,Mn)As will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-10510