Gyromagnetic bifurcation in a levitated ferromagnetic particle
Mesoscale and Nanoscale Physics
2023-09-20 v2
Abstract
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.
Keywords
Cite
@article{arxiv.2202.02461,
title = {Gyromagnetic bifurcation in a levitated ferromagnetic particle},
author = {T. Sato and T. Kato and Daigo Oue and M. Matsuo},
journal= {arXiv preprint arXiv:2202.02461},
year = {2023}
}
Comments
14 pages, 6 figures