Circulating cavity magnon polaritons

Weichao Yu; Tao Yu; Gerrit E.W. Bauer

doi:10.1103/PhysRevB.102.064416

Circulating cavity magnon polaritons

Weichao Yu, Tao Yu, Gerrit E.W. Bauer

Advanced Institute for Materials Research (AIMR)

Research output: Contribution to journal › Article › peer-review

17 Citations (Scopus)

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.

Original language	English
Article number	064416
Journal	Physical Review B
Volume	102
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevB.102.064416
Publication status	Published - 2020 Aug 1

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10.1103/PhysRevB.102.064416

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title = "Circulating cavity magnon polaritons",

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.",

author = "Weichao Yu and Tao Yu and Bauer, {Gerrit E.W.}",

note = "Funding Information: This work was supported by the JSPS Kakenhi (Grants No. 19H006450 and No. 20K14369) and the Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO). T.Y. acknowledges the hospitality and support from the IMR. Publisher Copyright: {\textcopyright} 2020 American Physical Society.",

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PY - 2020/8/1

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N2 - 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.

AB - 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.

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Circulating cavity magnon polaritons

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