Magnomechanics in suspended magnetic beams
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
Published inPhysical Review B
© 2021 American Physical Society
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. ...
PublisherAmerican Physical Society (APS)
Publication in research information system
MetadataShow full item record
Related funder(s)Academy of Finland
Funding program(s)Academy Project, AoF
Additional information about fundingThis work was supported by the Academy of Finland (Contracts No. 307757, No. 312057, No. 317118, and No. 321981), by the European Research Council (Contract No. 615755), and by the Centre for Quantum Engineering at Aalto University. K.S.U.K. acknowledges the financial support of the Magnus Ehrnrooth foundation. We acknowledge funding from the European Union’s Horizon 2020 research and innovation program under Grant Agreement No. 732894 (FETPRO HOT). ...
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