Spin Currents and Nonlinear Dynamics of Vortex Spin Torque Nano-Oscillators,Physics of Metals and Metallography

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Spin Currents and Nonlinear Dynamics of Vortex Spin Torque Nano-Oscillators
Physics of Metals and Metallography ( IF 1.1 ) Pub Date : 2022-05-10 , DOI: 10.1134/s0031918x22030140
K. A. Zvezdin ₁ , E. G. Ekomasov _{2,

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Affiliation

Abstract

Vortex spin torque nano-oscillators (STNOs) are multilayer spin-valve magnetic nanopillars, in which the magnetic layers (one or both) contain a magnetic vortex, the dynamics of which provides microwave radiation. In vortex STNOs, it was possible to achieve a high microwave signal power (on the order of 1 μW) and a relatively narrow linewidth (several hundreds of kHz). To further increase the power and improve the spectral characteristics of vortex STNOs, the collective dynamics and synchronization conditions in the ensembles of such nanostructures are studied. The subject of this review is the latest achievements in the field of physics and technology of vortex STNOs.

中文翻译：

涡旋扭矩纳米振荡器的自旋电流和非线性动力学

摘要

涡旋自旋扭矩纳米振荡器 (STNO) 是多层自旋阀磁性纳米柱，其中磁性层（一个或两个）包含一个磁涡旋，其动力学提供微波辐射。在涡流 STNO 中，可以实现高微波信号功率（大约 1 μW）和相对较窄的线宽（数百 kHz）。为了进一步提高涡流 STNO 的功率和改善光谱特性，研究了这种纳米结构集合中的集体动力学和同步条件。这篇综述的主题是涡旋STNO物理和技术领域的最新成果。

更新日期：2022-05-11

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