Detection of electron spin resonance down to 10 K using localized spoof surface plasmon. (5th May 2021)

• Record Type: Journal Article
• Authors: Roy, Subhadip; Nandi, Anuvab; Das, Pronoy; Mitra, Chiranjib
• Is Part Of: Journal of physics. Volume 54:Number 28(2021)
• Publication Date: 2021-05-05
• Subjects: localized spoof surface plasmon -- complementary metallic spiral structure -- electron spin resonance; Physics -- Periodicals; 530
• DOI: 10.1088/1361-6463/abfa3a
• Languages: English
• ISSNs: 0022-3727

Abstract

Abstract: In this study, novel use of the electromagnetic field profile of a localized spoof surface plasmonic mode to detect electron spin resonance (ESR) 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 Ω. The change in characteristics of the mode of interest with lowering of temperature has been observed and analyzed. ESR spectra of three paramagnetic samples—2, 2-diphenyl-1-picrylhydrazyl (DPPH), galvinoxyl, and 2, 2, 6, 6-tetramethylpiperidine-1-oxyl are recorded using this resonator at room temperature. ESR spectra of DPPH are also captured down to 10 K. Potential application of the mode in the detection of microwave induced Rashba field-driven ESR has been discussed.