| Project/Area Number |
25800190
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Condensed matter physics II
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| Research Institution | The University of Tokyo |
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Principal Investigator |
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| Project Period (FY) |
2013-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2014: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2013: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
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| Keywords | 重い電子系 / 量子臨界現象 / 非従来型超伝導 / 非フェルミ液体 / 重い電子 / 軌道揺らぎ / 四極子近藤効果 / 多極子 / 価数揺らぎ / 異方的c-f混成 |
|---|
| Outline of Final Research Achievements |
The origin of unusual heavy fermion formation under the strong valence fluctuations in α-, β-YbAlB4 has been investigated focusing on their strong anisotropy. We found the heavy fermion behavior is suppressed in the magnetic field above ~ 3 T only along the c-axis. In addition, we found a novel heavy fermion superconductivity arising from quantum fluctuation of f electron’s orbital degrees of freedom in PrV2Al20, which is a cage-like compound with a non-magnetic crystal electric field ground doublet.
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