Identification of spin wave modes in yttrium iron garnet strongly coupled to a co-axial cavity.
Journal of Applied Physics
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Lambert, N., Haigh, J., & Ferguson, A. (2015). Identification of spin wave modes in yttrium iron garnet strongly coupled to a co-axial cavity.. Journal of Applied Physics, 117 (053910)https://doi.org/10.1063/1.4907694
We demonstrate, at room temperature, the strong coupling of the fundamental and non-uniform magnetostatic modes of an yttrium iron garnet (YIG) ferrimagnetic sphere to the electromagnetic modes of a co-axial cavity. The well-de ned eld pro le within the cavity yields a speci c coupling strength for each magnetostatic mode. We experimentally measure the coupling strength for the di erent magnetostatic modes and, by calculating the expected coupling strengths, are able to identify the modes themselves.
We would like to acknowledge support from Hitachi Cambridge Laboratory, and EPSRC Grant No. EP/K027018/1. A.J.F. is supported by a Hitachi Research fellowship.
External DOI: https://doi.org/10.1063/1.4907694
This record's URL: https://www.repository.cam.ac.uk/handle/1810/248062