Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2009-08-21
Phys. Rev. B 80, 184406 (2009).
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
Scientific paper
We study theoretically the spin transfer effect on a domain wall in disordered weak ferromagnets. We have identified the adiabatic condition for the disordered case as $\lambda \gg \lambda_{\rm D}\equiv \sqrt{{\hbar D}/{\spol}}$, where $D$ and $\spol$ are the diffusion constant and the spin splitting energy due to the $s$-$d$ type exchange interaction, respectively, and found out that perfect spin-transfer effect occurs even in weak ferromagnets as long as this condition is satisfied. The effective $\beta$ term arising from the force turns out to govern the wall dynamics, and therefore, the wall motion can be as efficient as in strong ferromagnets even if $\spol$ is small.
Ban Yoshisuke
Tatara Gen
No associations
LandOfFree
Spin-transfer torque in disordered weak ferromagnets 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 Spin-transfer torque in disordered weak ferromagnets, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spin-transfer torque in disordered weak ferromagnets will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-666185