Spin-torque-driven vortex dynamics in a spin-valve pillar with a perpendicular polarizer
Spin-torque-driven vortex dynamics in a spin-valve pillar with a perpendicular polarizer
复制标题
具有垂直偏振器的自旋阀柱中的自旋扭矩驱动的涡流动力学
DOI:
10.1063/1.2822436
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发表时间:
2007-12
影响因子:
4
通讯作者:
Zhang, Zongzhi
中科院分区:
文献类型:
--
作者:
Liu, Yaowen;He, Huan;Zhang, Zongzhi
Spin-torque-driven vortex dynamics are studied by micromagnetic modeling in a spin-valve pillar which contains a perpendicular polarizer and a vortex free layer. Two kinds of transient oscillations mediated by the vortex-core motion are observed. The oscillations are treated as the competition among the spin torque, gyroforce, Gilbert damping, and the restoring force, governed by the generalized Thiele equation [A. A. Thiele, J. Appl. Phys. 45, 377 (1974)]. The fundamental frequency is dominated by the gyrotropic motion, while the high-frequency oscillation is triggered by the balance of the spin torque and demagnetizing field. The polarity of the vortex core can be switched through a vortex-antivortex pair creation and annihilation process.
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影响因子:
2.1
作者:
W. Jin;Yaowen Liu;Hong Chen
通讯作者:
W. Jin;Yaowen Liu;Hong Chen
影响因子:
8.6
作者:
J. Caputo;Y. Gaididei;F. Mertens;D. Sheka
通讯作者:
J. Caputo;Y. Gaididei;F. Mertens;D. Sheka
影响因子:
41.2
作者:
Houssameddine, D.;Ebels, U.;Dieny, B.
通讯作者:
Dieny, B.
影响因子:
4
作者:
Liu, Y.;Gliga, S.;Schneider, C. M.
通讯作者:
Schneider, C. M.
影响因子:
4
作者:
Xiao, Q. F.;Rudge, J.;Donohoe, G.
通讯作者:
Donohoe, G.