| Project/Area Number |
23550149
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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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| Research Field |
Functional materials chemistry
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| Research Institution | University of Yamanashi |
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Principal Investigator |
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| Co-Investigator(Renkei-kenkyūsha) |
SASAKI Takahiko 東北大学, 金属材料研究所, 教授 (20241565)
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| Research Collaborator |
HAMADA Koji
KOHNO Rei
YATO Yuya
IGUCHI Satoshi
NAKAMURA Toshikazu
MIURA Akira
NAGAO Masanori
TAKEI Takahiro
KUMADA Nobuhiro
TANAKA Isao
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| Project Period (FY) |
2011-04-28 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2013: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2012: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2011: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
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| Keywords | 量子スピン液体 / 電子型強誘電体 / 部分分子置換 / ヘテロダイマー / 化学圧力 / 乱れ / 強相関電子系 / 誘電率 / リラクサー |
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| Outline of Final Research Achievements |
We studied an organic charge transfer salt with the magnetic quantum spin liquid-like nature and electronic-ferroelectric property. The partly substitution of the donor molecule with analogues by approximately 1-10% results in the following remarkable variation of the electronic states. The 1% substitution with small molecules makes the spin liquid ground state unstable, while the dielectric properties are mainly governed by disorder. On the other hand, by the substitution with large molecules, the system becomes a superconducting state at low temperatures because of chemical pressure or weakened electron correlation.
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