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Journal Article

Circulating cavity magnon polaritons

MPS-Authors
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Yu,  T.
Theoretical Description of Pump-Probe Spectroscopies in Solids, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;

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Fulltext (public)

PhysRevB.102.064416.pdf
(Publisher version), 3MB

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Citation

Yu, W., Yu, T., & Bauer, G. E. W. (2020). Circulating cavity magnon polaritons. Physical Review B, 102(6): 064416. doi:10.1103/PhysRevB.102.064416.


Cite as: http://hdl.handle.net/21.11116/0000-0006-FC3D-B
Abstract
We predict magnon-polariton states circulating unidirectionally in a microwave cavity when loaded by a number of magnets on special lines. Realistic finite-element numerical simulations, including dielectric, time-dependent, and nonlinear effects, confirm the validity of the approximations of a fully analytical input-output model. We find that a phased antenna array can focus all power into a coherent microwave beam with controlled direction and an intensity that scales with the number of magnets.