Magnomechanics in suspended magnetic beams
- URL: http://arxiv.org/abs/2107.01051v3
- Date: Tue, 7 Dec 2021 09:01:20 GMT
- Title: Magnomechanics in suspended magnetic beams
- Authors: Kalle S. U. Kansanen, Camillo Tassi, Harshad Mishra, Mika A.
Sillanp\"a\"a, Tero T. Heikkil\"a
- Abstract summary: We consider the magnomechanical interaction occurring in a suspended magnetic beam.
In this scheme both magnetic and mechanical modes physically overlap and can also be driven individually.
We show how the magnetism affects the magnetomotive detection of the vibrations, and how the magnomechanics interaction can be used in microwave signal amplification.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- 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.
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