Observation of gyroscopic coupling in a non-spinning levitated ferromagnet
- URL: http://arxiv.org/abs/2504.13744v1
- Date: Fri, 18 Apr 2025 15:18:08 GMT
- Title: Observation of gyroscopic coupling in a non-spinning levitated ferromagnet
- Authors: F. Ahrens, A. Vinante,
- Abstract summary: A non-spinning permanent ferromagnet is predicted to behave as a gyroscope at sufficiently low frequencies.<n>We observe gyroscopic effects in the rotational dynamics of a non-spinning permanent ferromagnet levitated in a superconducting trap.
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- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: A non-spinning permanent ferromagnet is predicted to behave as a gyroscope at sufficiently low frequencies, which can be seen as a manifestation of the Einstein-de Haas effect. This yet unexplored regime has been recently proposed for ultrasensitive precession-based magnetometry and for atomic-like quantum stabilization of a levitated nanomagnet in a static field. Here, we observe signatures of gyroscopic effects in the rotational dynamics of a non-spinning permanent ferromagnet levitated in a superconducting trap. Specifically, we detect spin-rotation coupling between different librational modes, in good agreement with theoretical predictions. From our measurements, we can infer both the intrinsic angular momentum of the levitated magnet and its gyromagnetic $g$-factor.
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