Cryogenic platform to investigate strong microwave cavity-spin coupling in correlated magnetic materials

We present a comprehensive exploration of loop-gap resonators (LGRs) for electron spin resonance (ESR) studies, enabling investigations into the hybridization of solid-state magnetic materials with microwave polariton modes. The experimental setup, implemented in a Physical Property Measurement Syst...

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Bibliographic Details
Published inJournal of physics. Condensed matter Vol. 36; no. 35
Main Authors Jones, Aulden K, Mourigal, Martin, Mounce, Andrew M, Lilly, Michael P
Format Journal Article
LanguageEnglish
Published England IOP Publishing 07.06.2024
Subjects
electron spin resonance spectroscopy
microwave cavity
quantum magnetism
spin liquids
spin-polariton
electron spin resonance
quantum magnetism
spin liquids
spin-polariton
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Summary:We present a comprehensive exploration of loop-gap resonators (LGRs) for electron spin resonance (ESR) studies, enabling investigations into the hybridization of solid-state magnetic materials with microwave polariton modes. The experimental setup, implemented in a Physical Property Measurement System by Quantum Design, allows for measurements of ESR spectra at temperatures as low as 2 Kelvin. The versatility of continuous wave ESR spectroscopy is demonstrated through experiments on CuSO4·5H2O and MgCr2O4, showcasing the g-tensor and magnetic susceptibilities of these materials. The study delves into the challenges of fitting spectra under strong hybridization conditions and underscores the significance of proper calibration and stabilization. The detailed guide provided serves as a valuable resource for laboratories interested in exploring hybrid quantum systems through microwave resonators.
Bibliography:JPCM-123103.R1
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ISSN:0953-8984
1361-648X
DOI:10.1088/1361-648X/ad512e