2020 Fiscal Year Final Research Report
Tuning of the electronic state by anisotropic pressure for thin-film of molecular superconductors
Project/Area Number |
19K14668
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Research Category |
Grant-in-Aid for Early-Career Scientists
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Allocation Type | Multi-year Fund |
Review Section |
Basic Section 13030:Magnetism, superconductivity and strongly correlated systems-related
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Research Institution | Tokyo University of Science (2020) Institute of Physical and Chemical Research (2019) |
Principal Investigator |
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Project Period (FY) |
2019-04-01 – 2021-03-31
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Keywords | 分子性導体 / 超伝導 / モット絶縁体 / 異方的圧力効果 |
Outline of Final Research Achievements |
We have tried to clarify the mechanism of various electronic state such as superconductor, spin-liquid, and valence-bond-order phase in organic conductors by controlling the geometry of electronic correlation in two-dimensional uniaxial pressure control using thin-film-shaped samples. As a result, we succeeded in controlling the electronic states from the superconducting phase to the insulating phase, and discussed the relationship between the direction of pressure and the occurrence of the superconducting phase in the materials which the above method have not worked well by adjusting the experimental conditions. In addition, we discovered the new materials which shows the unconventional superconducting state as where the above control of physical properties will be effective.
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Free Research Field |
物性物理学
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Academic Significance and Societal Importance of the Research Achievements |
本研究で行った分子性導体についての電子状態の制御は、非従来型超伝導相やValence-Bond-Order非磁性状態など、発現機構が明確になっていない電子状態について、電子相関のジオメトリを自在に変化させることで、発現しやすい環境を議論し、その機構を解明することを目指すものであり、その手法として薄片に対する歪み圧力印加という新しい結晶制御法を確立するものである。これらの実現によって電子相関と電子状態の関係性をより深く理解しようとする物性物理の立場において知見を深めることにつながるものであり、また、超伝導などの実用上応用可能性の高い電子状態についても、応用の範囲を広げる可能性がある。
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