论文标题
具有非平面前进模式的无偏见自旋霍尔纳米振荡器
Bias-field-free spin Hall nano-oscillators with an out-of-plane precession mode
论文作者
论文摘要
旋转霍尔纳米振荡器（SHNOS）是新的微波振荡器的有前途的候选者，该振荡器由于驾驶电流较小而具有很高的耐用性。但是，具有平面进液（IPP）模式的常规SHNO需要一个偏置场才能进行稳定的振荡，而稳定的振荡，而在某些应用中不受欢迎，例如神经形态计算。在这里，我们通过在分析和数值上求解Landau-Lifshitz-Gilbert（LLG）方程，并通过平面硬轴（LLG）方程来分析平面硬轴（OPP）模式，并在这里提出并理论上分析了无偏见的SHNO。我们得出用于驱动电流和进动频率的公式，并表明它们与数值模拟结果非常吻合。我们表明，与传统的旋转扭矩纳米振荡器相比，我们提出的SHNO可以由偏置电流驱动得多。
Spin Hall nano-oscillators (SHNOs) are promising candidates for new microwave oscillators with high durability due to a small driving current. However, conventional SHNOs with an in-plane precession (IPP) mode require a bias field for stable oscillations which is not favored in certain applications such as neuromorphic computing. Here, we propose and theoretically analyze a bias-field-free SHNO with an in-plane hard axis and an out-of-plane precession (OPP) mode by solving the Landau-Lifshitz-Gilbert (LLG) equation analytically and numerically. We derive formulas for driving currents and precession frequency, and show that they are in good agreement with numerical simulation results. We show that our proposed SHNOs can be driven by much smaller bias current than conventional spin torque nano-oscillators.
