Abstract
In this review, mechanically detected electron spin resonance (MDESR) in the terahertz (THz) region is described to demonstrate its usability as a novel methodology for obtaining microscopic insights into local electronic structures. Using micromechanical devices, the sensitivity to a small-volume sample is greatly enhanced even for a cavityless setup. Moreover, there are plenty of options in the setup of MDESR, including detection modes, mechanical devices, and detection techniques. ESR spectroscopy of single-crystalline, powder, and frozen solution samples in the THz region are demonstrated.
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Acknowledgements
The authors acknowledge the collaborations with H. Ishikawa and Y. Mizutani for myoglobin preparation, with Y. Higashi, and S. Itoh for secondary ion mass spectroscopy analysis, with S. Hara for supplying single crystals of quantum magnets, with T. Yonetani, H. Hori, and M. Horitani for fruitful discussions, and with M. Kimata, N. Mizuno, S. Hirano, R. Tabuse, D. Tsubokura, Y. Tokuda, T. Miki, H. Horie, and K. Ishimura for helping technical developments.
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Ohmichi, E., Okamoto, T., Takahashi, H. et al. Mechanically Detected Terahertz Electron Spin Resonance. Appl Magn Reson 52, 283–304 (2021). https://doi.org/10.1007/s00723-020-01279-x
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DOI: https://doi.org/10.1007/s00723-020-01279-x