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Title: Superstrong coupling of thin film magnetostatic waves with microwave cavity

We experimentally demonstrated the strong coupling between a microwave cavity and standing magnetostatic magnon modes in a yttrium iron garnet film. Such strong coupling can be observed for various spin wave modes under different magnetic field bias configurations, with a coupling strength inversely proportional to the transverse mode number. A comb-like spectrum can be obtained from these high order modes. The collectively enhanced magnon-microwave photon coupling strength is comparable with the magnon free spectral range and therefore leads to the superstrong coupling regime. Our findings pave the road towards designing a new type of strongly hybridized magnon-photon system.
Authors:
;  [1] ;  [1] ;  [2] ;  [3]
  1. Department of Electrical Engineering, Yale University, New Haven, Connecticut 06511 (United States)
  2. (United States)
  3. Department of Applied Physics, Yale University, New Haven, Connecticut 06511 (United States)
Publication Date:
OSTI Identifier:
22494887
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 119; Journal Issue: 2; Other Information: (c) 2016 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; FERRITE GARNETS; MAGNETIC FIELDS; MICROWAVE RADIATION; PHOTONS; SPECTRA; SPIN WAVES; THIN FILMS; YTTRIUM