论文标题
谐波霍尔电压检测的数值模型
Numerical Model Of Harmonic Hall Voltage Detection For Spintronic Devices
论文作者
论文摘要
我们提出了一个用于多层旋转设备中的谐波电压检测的数值宏生模型。计算后端的核心是基于Landau-Lifshitz-Gilbert-Slonczewski方程，该方程将高性能与令人满意的大规模应用结合在一起，与实验结果一致。我们将模拟与TA/COFEB双层系统中的实验发现进行比较，以进行角和磁场依赖性电阻测量，电检测到的磁化动力学以及谐波霍尔电压检测。使用对所选系统参数的模拟扫描，例如极性角$θ$，磁化饱和度（$μ_\ textrm {0} m_ \ textrm {s} $）或单轴磁各向异性（$ k_ \ k_ \ k_ \ k_ \ k_ \ textrm {u} $），我们显示出产生的变化，并在构成的情况下进行了统治，构成了构成构成的统治，构成了统治的构成，即$μ_\ textrm {0} m_ \ textrm {s} $在第一和第二谐波上。在Spin-Diode Ferromagnetic共振（SD-FMR）中，共振方法（$μ__\ textrm {0} M_ \ textrm {s} $，$ k_ \ textrm {u} $）可以在数值上进行优化的参数，以获取适合拟合实验性数据的可行curve。
We present a numerical macrospin model for harmonic voltage detection in multilayer spintronic devices. The core of the computational backend is based on the Landau-Lifshitz-Gilbert-Slonczewski equation, which combines high performance with satisfactory, for large-scale applications, agreement with the experimental results. We compare the simulations with the experimental findings in Ta/CoFeB bilayer system for angular- and magnetic field-dependent resistance measurements, electrically detected magnetisation dynamics, and harmonic Hall voltage detection. Using simulated scans of the selected system parameters such as the polar angle $θ$, magnetisation saturation ($μ_\textrm{0}M_\textrm{s}$) or uniaxial magnetic anisotropy ($K_\textrm{u}$) we show the resultant changes in the harmonic Hall voltage, demonstrating the dominating influence of the $μ_\textrm{0}M_\textrm{s}$ on the first and second harmonics. In the spin-diode ferromagnetic resonance (SD-FMR) technique resonance method the ($μ_\textrm{0}M_\textrm{s}$, $K_\textrm{u}$) parameter space may be optimised numerically to obtain a set of viable curves that fit the experimental data.
