2023 Fiscal Year Final Research Report
Development of Magnetic Microscopy using RF Photon Assisted Tunneling between Superconductor Electrodes
| Project/Area Number |
21K04873
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Review Section |
Basic Section 29020:Thin film/surface and interfacial physical properties-related
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| Research Institution | Tohoku University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
米田 忠弘 東北大学, 多元物質科学研究所, 教授 (30312234)
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| Project Period (FY) |
2021-04-01 – 2024-03-31
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| Keywords | Radio frequency / Spin |
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| Outline of Final Research Achievements |
Combining radio frequency (RF) signals in scanning tunneling microscopy (STM) attracts attention for electron spin resonance detection of a single molecule. We inject an RF signal in the STM tunneling junction, which contains a radical molecule of TOV at the sample temperature of 400 mK. We detected the RF derived signature in the kondo resonance that originated from spin. We propose a model to modify the Tien-Gordon model for the photon-assisted tunneling (PAT) process by introducing the electron-photon coupling constant. This work suggests a pathway to tuning the electron-photon coupling constant in the RF region. In separated study, we found a new method to control the exchange interaction energy in the SMM, TbPc2, which is critical parameter to use the Tb 4f spin for the quantum information process.
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| Free Research Field |
Surface science
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| Academic Significance and Societal Importance of the Research Achievements |
This work may allow for tuning of the electron-photon coupling constant in the RF region which has implications for the future spintronics. We found a way to control the exchange interaction energy in TbPc2 molecule which is crucial for utilizing the Tb 4f spin for quantum information processing.
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