2013 Fiscal Year Final Research Report
Study on the charge fluctuation in molecular conductors
| Project/Area Number |
22550134
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Functional materials chemistry
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| Research Institution | Toyota Physical and Chemical Research Institute (2011-2013)
Institute for Molecular Science (2010) |
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Principal Investigator |
YAKUSHI Kyuya 公益財団法人豊田理化学研究所, その他部局, フェロー (20011695)
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| Project Period (FY) |
2010-04-01 – 2014-03-31
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| Keywords | 分子導体 / 強相関電子系 / 価数ゆらぎ / ラマン分光 / 反射分光 / 強誘電体 |
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| Research Abstract |
In the molecular solid, in which the molecule has an electric charge of 0.5+, the molecular charge shows static or dynamic deviation like (0.5+d, 0.5-d) and this deviation sometimes exists as fluctuation depending upon the arrangement of the molecules in the solid. In this research project, we provided experimental data to support the explanation of the origin of this deviation. In several materials, we showed that this deviation or fluctuation brought about new type of ferroelectricity. The ferroelectrics are indispensable materials for producing electronic and optical devices, and this new type of ferroelectricity is expected to be applicable to an optical device with fast response.
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[Journal Article] Kosterlitz-Thouless-type transition in a charge ordered state of the layered organic conductorα-(BEDT-TTF)_2I_3, S. Uji2013
Author(s)
S. Uji, K. Kodama, K. Sugii, Y. Takahide, T. Terashima, N. Kurita, S. Tsuchiya, M. Kohno, M. Kimata, K. Yamamoto, and K. Yakushi
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Journal Title
Phys. Rev. Lett.
Volume: 110
Pages: 196602
DOI
Peer Reviewed
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[Journal Article] Charge transport in charge-ordered states of two-dimensional organic conductors,α-(BEDT-TTF)_2I_3 andα'-(BEDT-TTF)_2IBr_22012
Author(s)
K. Kodama, M. Kimata, Y. Takahide, N. Kurita, A. Harada, H. Satsukawa, T. Terashima, S. Uji, K. Yamamoto, and K. Yakushi
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Journal Title
J. Phys. Soc. Jpn.
Volume: 81
Pages: 044703 (7)
DOI
Peer Reviewed
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[Journal Article] Charge-order driven proton arrangement in a hydrogen-bonded charge-transfer complex based on a pyridyl-substituted TTF derivative2012
Author(s)
S. C. Lee, A. Ueda, H. Kamo, K. Takahashi, M. Uruichi, K. Yamamoto, K. Yakushi, A. Nakao, R. Kumai, K. Kobayashi, H. Nakao, Y. Murakami, and H. Mori
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Journal Title
Chem. Commun.
Volume: 48
Pages: 8673-8675
DOI
Peer Reviewed
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[Journal Article] Intradimer charge disporoportionation in Triclinic-EtMe_3P[Pd(dmit)_2]_2 (dmit : 1,3-Dithiole-2-thione-4,5-dithiolate)2011
Author(s)
T. Yamamoto, Y. Nakazawa, M. Tamura, A. Nakao, Y. Ikemoto, T. Moriwaki, A. Fukaya, R. Kato, and K. Yakushi
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Journal Title
J. Phys. Soc. Jpn.
Volume: 80
Pages: 123709 (4)
DOI
Peer Reviewed
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[Presentation] Raman study ofκ-(BEDT-TTF)_2Cu_2(CN)_32012
Author(s)
K. Yakushi, O. Drozdova, Y. Shimizu, G. Saito, A. Kawamoto, T. Yamamoto
Organizer
International Symposium on Material Science Opened by Molecular Degrees of Freedom, MDF2012
Place of Presentation
Miyazaki
Year and Date
2012-12-03
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[Presentation] Successive ferroelectric transitions inα'-(BEDT-TTF)_2IBr_2 studied by second-harmonic generation under hydrostatic pressures2011
Author(s)
K. Yamamoto, A. Kowalska, M. Uruichi, K. Yakushi, C. Hyon, M. Watanabe, Y. Noda, R. Kondo
Organizer
ISCOM2011 (9th International Symposium on Crystalline Organic Metals, Superconductors, and Ferromagnetics)
Place of Presentation
Gniezno, Poland
Year and Date
2011-09-27
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[Presentation] Possibility of Berezinskii-Kosterlitz- Thouless transition in charge ordered systemα-(BEDT-TTF)_2I_32011
Author(s)
K. Kodama, Y. Takahide, N. Kurita, S. Tsuchiya, T. Terashima, S. Uji, K. Yamamoto, K. Yakushi
Organizer
SCOM2011 (9th International Symposium on Crystalline Organic Metals, Superconductors, and Ferromagnetics)
Place of Presentation
Gniezno, Poland
Year and Date
2011-09-27
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