Developments of ultra-high sensitive high-pressure THz ESR system using the diamond NV centers

2021 Fiscal Year Final Research Report

• Project/Area Number: 19K21852
• Research Category: Grant-in-Aid for Challenging Research (Exploratory)
• Allocation Type: Multi-year Fund
• Review Section: Medium-sized Section 13:Condensed matter physics and related fields
• Research Institution: Kobe University
• Principal Investigator: Ohta Hitoshi 神戸大学, 分子フォトサイエンス研究センター, 教授 (70194173)
• Co-Investigator(Kenkyū-buntansha): 櫻井 敬博 神戸大学, 研究基盤センター, 助教 (60379477)
• Project Period (FY): 2019-06-28 – 2022-03-31
• Keywords: NVセンター / 光検出磁気共鳴 / ダイヤモンドアンビルセル / テラヘルツ / 電子スピン共鳴

Outline of Final Research Achievements

Due to the COVID-19 pandemic from the beginning of the research, it became almost impossible to exchange the latest information with the vendors and researchers who are indispensable for such Grant-in-Aid for Challenging Exploratory Research, so the plan showed a big delay. However, in 2021, it became possible to visit face-to-face society meetings and other laboratories, prepare for joint research on equipment necessary for demonstration experiments, and purchase a suitable diamond anvil pressure cell with this budget. Preparations for conducting a demonstration experiment were completed in the end of the January, 2022. However, due to the application of the COVID-19 priority measures in Japan, the visiting experiment could not be completed within the period. Demonstration experiments will be conducted soon, and we can move on to the next development stage.

Free Research Field

磁気共鳴

Academic Significance and Societal Importance of the Research Achievements

ヘリウムガスの液化が極低温を実現し超伝導の発見に繋がったように，極限環境における新計測法の実現は，物性物理学の発展に寄与することは間違いない。特に，ダイヤモンドアンビル圧力セルが実現する超高圧は，酸素の超伝導発見の例を待つまでもなく未踏のフロンティアであり，そこに電気抵抗や放射光以外の電子のミクロスコピック測定であるテラヘルツ電子スピン共鳴測定を実現するのは世界で初めての試みであり，その意義は計り知れない。