Field-angle-dependent multi-frequency electron spin resonance spectroscopy in submillimeter wave range based on thermal detection

• Takahashi, Hideyuki

• Sakurai, Takahiro

• Ohmichi, Eiji

• Ohta, Hitoshi

Abstract

We report the thermally detected electron spin resonance (ESR) spectroscopy in the frequency range of millimeter and submillimeter waves. Under high vacuum conditions, a cantilever-shaped device detects ESR absorption of a mounted sample as a temperature difference in its beam direction. Despite the simple experimental setup, the spin sensitivity of the order of 10(12) spins/G was achieved at 10 K. The developed sample stage is small enough to be used in a 10 T split-pair superconducting magnet with a bore of 25 mm, enabling precise field-angle-dependent ESR measurements at multi-frequencies above 500 GHz. We demonstrate its usefulness by studying the field-angle dependence of the excitation energy of the dimer triplet state in the Shastry–Sutherland magnet SrCu2(BO3)2.

Journal

• Review of Scientific Instruments

  Review of Scientific Instruments 92 (8), 083901-, 2021-08-01

  AIP Publishing

Keywords

• Instrumentation

Details

• CRID: 1050012570391425280
• NII Article ID: 120007131933
• NII Book ID: AA00817730
• DOI: 10.1063/5.0053227
• ISSN: 10897623
• ISSN: 00346748
• HANDLE: 20.500.14094/90008506
• Web Site: https://pubs.aip.org/aip/rsi/article-pdf/doi/10.1063/5.0053227/13358774/083901_1_online.pdf
• Text Lang: en
• Article Type: journal article
• Data Source:
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  • CiNii Articles
  • KAKEN