这篇paper最重要的意义就是提出了ST-FMR(spin-torque Ferromagnetic Resonance, 自旋磁矩铁磁共振)法来测量体系中的自旋流(spin current)和自旋霍尔角(spin Hall angle),相当于对以前的测量方法论框架中补充了很大一块空缺。这也是目前主流的输运测量方法之一。 参考文献 https://journals.aps.org/prl/abstract/10.11...
Spin-torque FMR and large rectification sensitivity in Fe-rich CoFeB-MgO magnetic tunnel junctionsInterplay of the large tunnel magneto-resistance (TMR) effect [1] and spin-transfer torque [2, 3] provide various nonlinear effects and functions to the magnetic tunnel junctions (MTJs), such as ...
Results Spin–torque FMR. We use the ST-FMR technique to determine the generation efficiency of the spin–orbit torques affected by the natural oxidation of Cu/Ni81Fe19 bilalyers13. In the ST-FMR experiment, a microwave-frequency charge current is applied along the longitudinal direction of ...
(FMR) spectroscopy and the linear spin wave modes of the final devices are determined using spin-torque FMR. Spin wave auto-oscillations are observed both electrically, via a microwave voltage from the anisotropic magnetoresistance, and optically, using micro-Brillouin Light Scattering (μ-BLS) ...
{\times }}\)z13. Recalling the spin torque efficiencies of θAD,x~ (−0.019 ± 0.004) and θAD,y ~ (0.106 ± 0.006) calculated from angular-dependent SHH measurement, the two methods are consistent. From ST-FMR measurement, we also obtained the magnetic damping ...
LLG方程为很多现象的分析提供了十分可靠的依据,包括很多理论计算的工作都是在此基础上进行,比如探讨自旋流对磁矩的作用就可以在这个方程的右边多加上一个自旋转移力矩(Spin Transfer Torque)项和自旋轨道力矩(Spin-Orbit Torque)项[1]。 2、铁磁共振-Ferromagnetic resonance(FMR) ...
Spin Hall torque is applied to the 145 nm long active region in the middle of the nanowire. In addition, we account for the current-induced Oersted field and Joule heating. The Oersted field applied to the FM magnetization in the −y direction arises from the electric current in the Pt ...
Spin-orbit torque switching of an antiferromagnetic metallic heterostructure Introduction Strong interests have been focused on the electrical control of the magnetic moment in spintronic devices due to its promising application in low-power consumption and high-speed processing logic and memory1. Recently...
Spin-torque switching with the giant spin hall effect of tantalum L Liu,FP Chi,Y Li,... - American Association for the Advancement of Science 被引量: 0发表: 2012年 Spin Hall effect clocking of nanomagnetic logic without a magnetic field Spin-based computing schemes could enable new ...
FIGS. 7A to 7C show the spin-torque ferromagnetic resonance (ST-FMR) measurements on a WTe2 (17.2 nm)/Py (6 nm) sample, in which: FIG. 7A shows a microscopic image of the ST-FMR device; FIG. 7B Illustrates the sample geometry for the ST-FMR measurements; and FIG. 7C shows the...