Cavity magnomechanics
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Abstract
A dielectric body couples with electromagnetic fields through radiation pressure and electrostrictive forces, which mediate phonon-photon coupling in cavity optomechanics. In a magnetic medium, according to the Korteweg-Helmholtz formula, which describes the electromagnetic force density acting on a medium, magneostrictive forces should arise and lead to phonon-magnon interaction. We report such a coupled phonon-magnon system based on ferrimagnetic spheres, which we term as cavity magnomechanics, by analogy to cavity optomechanics. Coherent phonon-magnon interactions, including electromagnetically induced transparency and absorption, are demonstrated. Because of the strong hybridization of magnon and microwave…
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700
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4Topics & keywords
Topics
Keywords
- Ferrimagnetism
- Magnon
- Physics
- Condensed matter physics
- Quantum mechanics
- Ferromagnetism
- Magnetization
- Magnetic field
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