2017 Fiscal Year Final Research Report
Investigation of precursor phenomenon of high temperature superconductivity induced by quantum fluctuation
Project/Area Number |
16K17737
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Research Category |
Grant-in-Aid for Young Scientists (B)
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Allocation Type | Multi-year Fund |
Research Field |
Condensed matter physics II
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Research Institution | The University of Tokyo |
Principal Investigator |
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Research Collaborator |
TAKEYAMA Shojiro 東京大学, 物性研究所, 教授 (20163446)
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Project Period (FY) |
2016-04-01 – 2018-03-31
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Keywords | 高温超伝導 / 超強磁場 / 電気伝導度 / テラヘルツ |
Outline of Final Research Achievements |
The high-frequency terahertz electrical conductivity measurement of high-temperature superconductors is planned. Using ZnTe crystal and Ti:Sapphire laser, the measurement system is developed. Due to the aging of the laser, the maintenance of the measurement system has been continued. In parallel, I succeed the development of the high-frequency contactless electrical conductivity measurement system, using the radio frequency (~800 MHz) voltage as a probe signal. Using this instrument, the high-field property of the high-temperature superconductor was investigated. The upper critical field of one of the typical cuprate superconductor, La1.86Sr0.16Cu4, was investigated. I clarified that the Pauli paramagetic effect dominates the pair-breaking of superconductivity under high magnetic fields at low temperatures.
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Free Research Field |
固体物性
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