Mechanically Detected Terahertz Electron Spin Resonance

Ohmichi, Eiji; Okamoto, Tetsuhiko; Takahashi, Hideyuki; Ohta, H.

doi:10.1007/s00723-020-01279-x

Appl Magn Reson

2020

DOI: 10.1007/s00723-020-01279-x

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Mechanically Detected Terahertz Electron Spin Resonance

Eiji Ohmichi

Tetsuhiko Okamoto

Hideyuki Takahashi

et al.

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Cited by 4 publications

(1 citation statement)

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“…Force-detected ESR (FDESR) has been proposed as an alternative method. [5][6][7][8] In FDESR, a slight change in the sample magnetization M 0 along with ESR absorption is detected after being converted into the magnetic gradient force F grad . Owing to the high force sensitivity of micromechanical devices, the spin sensitivity is generally much higher than that of the transmission method.…”

mentioning

confidence: 99%

Force detection of high-frequency electron spin resonance near room temperature using high-power millimeter-wave source gyrotron

Takahashi

Ishikawa

Okamoto

et al. 2021

Applied Physics Letters

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We report the measurement of force-detected electron spin resonance (FDESR) at 154 GHz using a gyrotron. The high output power allows the use of a strong transverse magnetic field larger than 10 À4 T, which is sufficient to cause ESR saturation. We obtained the FDESR signal with a high spin sensitivity on the order of 10 12 spins/G at 280 K. Our system has promising applications in high-frequency ESR studies of low-spin concentration samples, such as metalloprotein solutions.

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mentioning

confidence: 99%

Force detection of high-frequency electron spin resonance near room temperature using high-power millimeter-wave source gyrotron

Takahashi

Ishikawa

Okamoto

et al. 2021

Applied Physics Letters

Self Cite

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All-on-Chip Concurrent Measurements of the Static Magnetization and of the Electron Spin Resonance with Microcantilevers

2021

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A large variety of the samples of novel magnetic materials, which are of high interest due to their exotic properties, are only available in very small sizes. In some cases, it is not possible to synthesize large single crystals; in other cases, the small size itself is the key prerequisite to manifest a specifically interesting property of the material. The smallness of a sample rises a problem of the detection of the static magnetic response and of the electron spin resonance (ESR) signal. To overcome this problem, we propose to use a cantilever-based (torque-detected) setup with the capability of a simultaneous measurement of ESR and static magnetization. This setup offers a high sensitivity and the ability to acquire along with the ESR signal the components of the magnetization tensor in a single experimental run. Here, we present the working principle of this setup, as well as the estimate of its sensitivity from the measurements on the standard Co Tutton salt sample.

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Celebration of 80 Years of EPR

Salikhov,

Eaton,

Eaton

2024

Appl Magn Reson

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Mechanically Detected Terahertz Electron Spin Resonance

Cited by 4 publications

References 43 publications

Force detection of high-frequency electron spin resonance near room temperature using high-power millimeter-wave source gyrotron

Force detection of high-frequency electron spin resonance near room temperature using high-power millimeter-wave source gyrotron

All-on-Chip Concurrent Measurements of the Static Magnetization and of the Electron Spin Resonance with Microcantilevers

Celebration of 80 Years of EPR

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