Biased quasiballistic spin torque magnetization reversal.
Biased quasiballistic spin torque magnetization reversal.
复制标题
偏置准弹道自旋扭矩磁化反转。
DOI:
10.1103/physrevlett.101.087201
复制
发表时间:
2008
影响因子:
8.6
通讯作者:
H. Schumacher
中科院分区:
文献类型:
--
作者:
S. Serrano;K. Rott;G. Reiss;J. Langer;B. Ocker;H. Schumacher
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.