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Detection of electron spin resonance down to 10 K using localized spoof surface plasmon

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arxiv 2101.11528 v1 pith:WH6TVWIX submitted 2021-01-27 physics.app-ph

classification physics.app-ph
keywords electronmoderesonancespinbeendetectiondownlocalized
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abstract

In this study, novel use of the electromagnetic field profile of a localized spoof surface plasmonic mode to detect electron spin resonance is being reported. The mode is supported on a resonator with a complementary metallic spiral structure, etched on the ground plane of a microstrip line having a characteristic impedance of 50 $\Omega$. The change in characteristics of the mode of interest with lowering of temperature has been observed and analyzed. Electron spin resonance spectra of a standard paramagnetic sample, 2,2-diphenyl-1-picrylhydrazyl, are recorded using this resonator down to 10 K. Potential application of the mode in the detection of microwave Rashba field-driven electron spin resonance has been discussed.

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