Biased quasiballistic spin torque magnetization reversal |
| |
Authors: | Serrano-Guisan S Rott K Reiss G Langer J Ocker B Schumacher H W |
| |
Affiliation: | Physikalisch-Technische Bundesanstalt, Bundesallee 100, D-38116 Braunschweig, Germany. santiago.serrano-guisan@ptb.de |
| |
Abstract: | We explore the ultrafast limit of spin torque magnetization reversal time. Spin torque precession during a spin torque current pulse and free magnetization ringing after the pulse is detected by time-resolved magnetotransport. Adapting the duration of the pulse to the precession period allows coherent control of the final orientation of the magnetization. In the presence of a hard axis bias field, we find optimum quasiballistic spin torque magnetization reversal by a single precessional turn directly from the initial to the reversed equilibrium state. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|