Magnetization switching by spin torque using subnanosecond current pulses assisted by hard axis magnetic fields

被引：35
|
作者：
Devolder, T
Crozat, P
Kim, JV
Chappert, C
Ito, K
Katine, JA
Carey, MJ
机构：
[1] Univ Paris 11, CNRS, Inst Elect Fondamentale, UMR 8622, F-91405 Orsay, France
[2] Hitachi Europe Ltd, Cavendish Lab, Hitachi Cambridge Lab, Cambridge CB3 0HE, England
[3] Hitachi GST, San Jose Res Ctr, San Jose, CA 95120 USA
来源：
APPLIED PHYSICS LETTERS | 2006年 / 88卷 / 15期
关键词：
D O I：
10.1063/1.2193434
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We have induced magnetization switching by spin transfer in pillar-shaped spin valves using nanosecond-scale current pulses combined with hard axis fields. Switching events requiring 100 ps pulses were obtained. In comparison with the switching induced by a single current pulse, biasing the device with a hard axis field decreases the pulse duration needed for error-free switching. The reduction of the cost in pulse amplitude scales with the magnitude of the applied field, and can be quantitatively understood from micromagnetic simulations and macrospin arguments taking into account the thermal fluctuations. (c) 2006 American Institute of Physics.
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页数：3
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