Identification of spin wave modes in yttrium iron garnet strongly coupled to a co-axial cavity
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Authors
Lambert, NJ
Haigh, JA
Ferguson, AJ
Abstract
jats:pWe demonstrate, at room temperature, the strong coupling of the fundamental and non-uniform magnetostatic modes of an yttrium iron garnet ferrimagnetic sphere to the electromagnetic modes of a co-axial cavity. The well-defined field profile within the cavity yields a specific coupling strength for each magnetostatic mode. We experimentally measure the coupling strength for the different magnetostatic modes and, by calculating the expected coupling strengths, we are able to identify the modes themselves.</jats:p>
Description
Keywords
5108 Quantum Physics, 51 Physical Sciences
Journal Title
Journal of Applied Physics
Conference Name
Journal ISSN
0021-8979
1089-7550
1089-7550
Volume Title
117
Publisher
AIP Publishing
Publisher DOI
Sponsorship
Engineering and Physical Sciences Research Council (EP/K027018/1)
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.