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arXiv 2202.02461cond-mat.mes-hall
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悬浮铁磁粒子中的旋磁分岔

Gyromagnetic bifurcation in a levitated ferromagnetic particle

T. Sato, T. Kato, Daigo Oue, M. Matsuo

AI总结:

本文研究微波辐照下悬浮铁磁粒子中铁磁共振诱导的机械转动,发现转动频率与微波频率相当时出现旋磁分岔及双稳定解,并揭示其源于Barnett与Einstein-de Haas效应共存,为研究自旋到宏观转动的微观弛豫提供了平台。

摘要:

我们研究了在微波辐照下由铁磁共振引起的悬浮磁性粒子的机械转动。我们表明,当转动频率与微波频率相当时,通过分岔在一定的参数范围内会出现两个稳定解。这一现象源于Barnett效应与Einstein-de Haas效应的共存。我们还揭示,该测量对自旋-转动耦合的强度非常敏感。我们的工作为从自旋到宏观转动的微观弛豫过程的研究提供了一个平台。

英文摘要:

We examine the mechanical rotation of a levitated magnetic particle that is induced by ferromagnetic resonance under microwave irradiation. We show that two stable solutions appear in a certain range of parameters by bifurcation when the rotation frequency is comparable to the microwave frequency. This phenomenon originates from the coexistence of the Barnett and the Einstein-de Haas effects. We also reveal that this measurement is sensitive to the strength of the spin-rotation coupling. Our work provides a platform for accessing a microscopic relaxation process from spin to macroscopic rotation.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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