| 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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| Project Status |
Completed (Fiscal Year 2011)
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| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2011: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2010: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
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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 / スピン依存伝導 / 誘電率 / 電子間クーロン相互作用 / 量子トンネル効果 |
|---|
| 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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