Stability of a magnetically levitated nanomagnet in vacuum: Effects of gas and magnetization damping

Kustura K, Wachter V, Lopez AER, Rusconi CC (2022)

Publication Type: Journal article

Publication year: 2022

Journal

Physical Review B American Physical Society

Book Volume: 105

Journal Issue: 17

DOI: 10.1103/PhysRevB.105.174439

Abstract

In the absence of dissipation a nonrotating magnetic nanoparticle can be stably levitated in a static magnetic field as a consequence of the spin origin of its magnetization. Here we study the effects of dissipation on the stability of the system, considering the interaction with the background gas and the intrinsic Gilbert damping of magnetization dynamics. At large applied magnetic fields we identify magnetization switching induced by Gilbert damping as the key limiting factor for stable levitation. At low applied magnetic fields and for small particle dimensions, magnetization switching is prevented due to the strong coupling of rotation and magnetization dynamics, and the stability is mainly limited by the gas-induced dissipation. In the latter case, high vacuum should be sufficient to extend stable levitation over experimentally relevant timescales. Our results demonstrate the possibility to experimentally observe the phenomenon of quantum spin stabilized magnetic levitation.

Authors with CRIS profile

Vanessa Wachter Graduiertenzentrum der FAU

Additional Organisation(s)

Sonderforschungsbereich/Transregio 306/1: Quantenkooperativität von Licht und Materie - QuCoLiMa

Related research project(s)

Optomagnomechanical arrays (B05) TRR 306: Quantenkooperativität von Licht und Materie – QuCoLiMa Jan. 1, 2021 - Dec. 31, 2024

Involved external institutions

Österreichische Akademie der Wissenschaften AT Austria (AT) Max-Planck-Institute of Quantum Optics (MPQ) / Max-Planck-Institut für Quantenoptik DE Germany (DE)

How to cite

APA:

Kustura, K., Wachter, V., Lopez, A.E.R., & Rusconi, C.C. (2022). Stability of a magnetically levitated nanomagnet in vacuum: Effects of gas and magnetization damping. Physical Review B, 105(17). https://dx.doi.org/10.1103/PhysRevB.105.174439

MLA:

Kustura, Katja, et al. "Stability of a magnetically levitated nanomagnet in vacuum: Effects of gas and magnetization damping." Physical Review B 105.17 (2022).

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