| Project/Area Number |
21540340
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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 |
Condensed matter physics II
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| Research Institution | University of the Ryukyus |
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Principal Investigator |
NAKAMA Takao 琉球大学, 理学部, 教授 (80264472)
|
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| Co-Investigator(Kenkyū-buntansha) |
NIKI Haruo 琉球大学, 理学部, 教授 (80145549)
辺土 正人 琉球大学, 理学部, 准教授 (00345232)
|
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| Co-Investigator(Renkei-kenkyūsha) |
HEDO Masato 琉球大学, 理学部, 准教授 (00345232)
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| Project Period (FY) |
2009 – 2011
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| Project Status |
Completed (Fiscal Year 2011)
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| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2011: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2010: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2009: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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| Keywords | 磁性 / 熱電能 / 電気抵抗 / 磁気量子臨界点 / 高圧力 / 強磁場 / 磁気ゆらぎ / 希土類金属間化合物 / 価数転移 / 立方晶ラーベス相 |
|---|
| Research Abstract |
In order to investigate the effect of magnetic fluctuations on transport properties of the rare earth compounds around magnetic critical point, the electrical resistivity and thermopower have been measured at 2 K to 300 K under pressures up to 3 GPa in magnetic fields up to 10 T. The anomalous behaviors of electrical resistivity and thermopower of the compound with the critical atomic concentration have been observed. And the measurement results indicate the large change of the temperature dependence, indicating the large modification of the electrical density of states at the Fermi level.
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