New mechanism for generating spin transfer torque without charge current

Details New mechanism for generating spin transfer torque without charge current New mechanism for generating spin transfer torque without charge current

2011-11-14

arxiv.org/abs/1111.3196v2

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

10 pages, 3 figures

Scientific paper

A new physical mechanism for generating spin-transfer torque is proposed. It is due to interference of bias driven nonequilibrium electrons incident on a switching junction with the electrons reflected from an insulating barrier inserted in the junction after the switching magnet. It is shown using the rigorous Keldysh formalism that this new out-of-plane torque $T_{\perp}$ is proportional to an applied bias and is as large as the torque in a conventional junction generated by a strong charge current. However, the charge current and the in-plane torque $T_{\parallel}$ are almost completely suppressed by the insulating barrier. This new junction thus offers the highly applicable possibility of bias-induced switching of magnetization without charge current.

Affiliated with

Also associated with

No associations

Rating

New mechanism for generating spin transfer torque without charge current 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 New mechanism for generating spin transfer torque without charge current, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and New mechanism for generating spin transfer torque without charge current will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-218075