Microwave magnetic dynamics in highly conducting magnetic nanostructures
作者： M. Kostylev , J. Ding , E. Ivanov , S. Samarin , A. O. Adeyeye
DOI: 10.1063/1.4873897
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摘要: We performed low-noise broadband microstrip ferromagnetic resonance (FMR) measurements of the resonant modes an array metallic nanostripes. In addition to a strong signal fundamental mode, we observed up five weak-amplitude peaks in field-resolved FMR traces, depending on frequency. These higher-order absorption have been theoretically identified as due excitation odd and even standing spin waves across direction confinement plane (i.e., stripe width). The theory developed suggests that become excited spatially uniform microwave field setup large conductivity metals. This promotes large-amplitude eddy currents sample by incident magnetic ultimately results these modes. Following this theory, found current contribution is present only for patterned materials when one surface surface, it case FMR.
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