Spin-transfer induced ultrafast precessional switching enhanced by interface anisotropy in a ferromagnetic nanopillar

被引：15
|
作者：
Daniel, M. [1 ,2 ]
Sabareesan, P. [1 ]
机构：
[1] Bharathidasan Univ, Sch Phys, Ctr Nonlinear Dynam, Tiruchirappalli 620024, India
[2] Abdus Salam Int Ctr Theoret Phys, I-34014 Trieste, Italy
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2010年 / 322卷 / 06期
关键词：
Spin-transfer torque; Nanopillar; Interface anisotropy; Switching time; MAGNETIC MULTILAYER; EXCITATION; WAVES;
D O I：
10.1016/j.jmmm.2009.10.039
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Spin-transfer induced ultrafast precessional switching of magnetization in a Co/Cu/Co nanopillar device is studied. Micromagnetic calculations show that precessional magnetization switching occurs above a threshold current. The presence of interface uniaxial anisotropy in the Co-thin film free layer influences heavily the current and the energy required to initiate the switching in the device, and the speed of the precessional switching. The threshold current and the precessional switching time are significantly reduced by this effect. (C) 2009 Elsevier B. V. All rights reserved.
引用
收藏
页码：675 / 680
页数：6
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