Phys. Rev. Lett. 101, 087201 (2008) [4 pages]Biased Quasiballistic Spin Torque Magnetization ReversalReceived 15 May 2008; published 19 August 2008 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. © 2008 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.101.087201
DOI:
10.1103/PhysRevLett.101.087201
PACS:
85.75.Dd, 72.25.−b, 75.60.Jk
|
|
About | Terms and Conditions | Subscriptions | Search | Help
Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.