A1 Journal article (refereed)
Magnomechanics in suspended magnetic beams (2021)

Kansanen, K. S. U., Tassi, C., Mishra, H., Sillanpää, M. A., & Heikkilä, T. T. (2021). Magnomechanics in suspended magnetic beams. Physical Review B, 104(21), Article 214416. https://doi.org/10.1103/physrevb.104.214416

JYU authors or editors

Publication details

All authors or editors: Kansanen, Kalle S. U.; Tassi, Camillo; Mishra, Harshad; Sillanpää, Mika A.; Heikkilä, Tero T.

Journal or series: Physical Review B

ISSN: 2469-9950

eISSN: 2469-9969

Publication year: 2021

Publication date: 13/12/2021

Volume: 104

Issue number: 21

Article number: 214416

Publisher: American Physical Society (APS)

Publication country: United States

Publication language: English

DOI: https://doi.org/10.1103/physrevb.104.214416

Publication open access: Not open

Publication channel open access: Channel is not openly available

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/79072

Web address of parallel published publication (pre-print): https://arxiv.org/abs/2107.01051

Abstract

Cavity optomechanical systems have become a popular playground for studies of controllable nonlinear interactions between light and motion. Owing to the large speed of light, realizing cavity optomechanics in the microwave frequency range requires cavities up to several mm in size, hence making it hard to embed several of them on the same chip. An alternative scheme with much smaller footprint is provided by magnomechanics, where the electromagnetic cavity is replaced by a magnet undergoing ferromagnetic resonance, and the optomechanical coupling originates from magnetic shape anisotropy. Here, we consider the magnomechanical interaction occurring in a suspended magnetic beam, a scheme in which both magnetic and mechanical modes physically overlap and can also be driven individually. We show that a sizable interaction can be produced if the beam has some initial static deformation, as is often the case due to unequal strains in the constituent materials. We also show how the magnetism affects the magnetomotive detection of the vibrations, and how the magnomechanics interaction can be used in microwave signal amplification. Finally, we discuss experimental progress towards realizing the scheme.

Keywords: condensed matter physics; quantum physics; magnetic fields

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Ministry reporting: Yes

Reporting Year: 2021

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