2011 Fiscal Year Final Research Report
Clarification and exploration of novel transport phenomena caused by electron-electron interactions and spin degrees of freedom in molecular crystals
| Project/Area Number |
22740237
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Condensed matter physics II
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| Research Institution | National Institute for Materials Science |
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Principal Investigator |
YAMAGUCHI Takahide 独立行政法人物質・材料研究機構, 超伝導線材ユニット, 主任研究員 (70399385)
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| Project Period (FY) |
2010 – 2011
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| Keywords | 分子性結晶 / モット絶縁体 / 電荷秩序 / 非線形伝導 / 巨大磁気抵抗 |
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| Research Abstract |
We have measured the low-temperature nonlinear current-voltage characteristics, dielectric properties, and magnetoconductance of organic crystalline insulators caused by electron-electron Coulomb interaction and clarified their transport mechanism. The Mott and charge-order insulators exhibit the same transport properties at zero magnetic field, but their magnetoconductances differ due to different spin states of the carriers that contribute to the conductivity. We have also performed measurements using micro-fabricated electrodes and under microwave irradiation.
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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)
Kota Kodama, Motoi Kimata, Yamaguchi Takahide, Nobuyuki Kurita, Atsushi Harada, Hidetaka Satsukawa, Taichi Terashima, Shinya Uji, Kaoru Yamamoto, and Kyuya Yakushi
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Journal Title
Journal of the Physical Society of Japan
Volume: 81
Pages: 044703-1-7
Peer Reviewed
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