Spin Transfer Torque for Continuously Variable Magnetization

Details Spin Transfer Torque for Continuously Variable Magnetization Spin Transfer Torque for Continuously Variable Magnetization

2006-01-09

arxiv.org/abs/cond-mat/0601172v2

Phys. Rev. B 73, 054428 (2006)

Physics

Condensed Matter

Materials Science

11 pages, 9 figures

Scientific paper

10.1103/PhysRevB.73.054428

We report quantum and semi-classical calculations of spin current and spin-transfer torque in a free-electron Stoner model for systems where the magnetization varies continuously in one dimension.Analytic results are obtained for an infinite spin spiral and numerical results are obtained for realistic domain wall profiles. The adiabatic limit describes conduction electron spins that follow the sum of the exchange field and an effective, velocity-dependent field produced by the gradient of the magnetization in the wall. Non-adiabatic effects arise for short domain walls but their magnitude decreases exponentially as the wall width increases. Our results cast doubt on the existence of a recently proposed non-adiabatic contribution to the spin-transfer torque due to spin flip scattering.

Affiliated with

Also associated with

No associations

Rating

Spin Transfer Torque for Continuously Variable Magnetization 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 for Continuously Variable Magnetization, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spin Transfer Torque for Continuously Variable Magnetization will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-684729