垂直点接触自旋霍尔纳米振荡器中自旋波动力学的微磁学模拟

朱耿宽, 高振宇, 陈丽娜, 周恺元, 梁力克, 陶醉, 刘荣华

Micromagnetic simulations of spin⁃wave dynamics in a vertical nanocontact⁃based Spin Hall nano⁃oscillator

Gengkuan Zhu, Zhenyu Gao, Li'na Chen, Kaiyuan Zhou, Like Liang, Zui Tao, Ronghua Liu

图3 在外磁场 $H = 900 ? O e$ ，面外角 $φ = 10^{o}$ 下，垂直点接触自旋霍尔纳米振荡器的频谱特性
(a~b) Oscillator spectrum dependence with excitation current density,(c~f) at current I=9 mA,the power intensity of the

m_{x}^{2}

and

m_{z}^{2}

in low?frequency oscillation modes f₁ and high?frequency oscillation modes f₂ (where

m_{x}^{}

and

m_{z}^{}

represent the components of the magnetic moment M in the x?axis and z?axis directions,respectively,the white horizontal dashed line represents the ferromagnetic resonance frequency of the film f_FMR=6.35 GHz,and the white circular dotted line represents the boundary of the point electrode).

Fig.3 At the magnetic field $H = 900 ? O e$ ,the out?plane angle $φ = 10^{o}$ ,the spectral characteristics of the SHNO