Electron spin resonance (ESR) and cyclotron resonance (CR) are vital in the study of electronic structure and magnetism of materials. For example, CR can yield the strength of electron-electron correlations via the dynamic mass, and determine the Fermi surface topology. However, very high magnetic fields are required to extend CR to heavy mass and/or disordered correlated-electron systems, and to cuprate superconductors, where the upper critical field must be exceeded. Similarly, high magnetic fields in conjunction with high-frequency ESR could access the magnetic interactions in highly anisotropic spin-gap materials and molecular quantum magnets, probe phase transitions in f-electron systems, and examine the electronic structure of organic radicals. In this presentation, we describe probe designs tailored to CR and ESR experiments and ESR data of the heavy fermion YbRh2Si2.

ESR of the heavy-fermion YbRh2Si2

251st National Meeting (2016)

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