| Project/Area Number |
23654119
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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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 | Kyoto University |
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Principal Investigator |
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| Project Period (FY) |
2011 – 2012
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| Project Status |
Completed (Fiscal Year 2012)
|
| Budget Amount *help |
¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2012: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2011: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Keywords | 強相関系 / 対称性の破れ / 磁気トルク / 角度依存性 / 斜方晶歪み / ネマティック秩序 / 磁気異方性 / 2次相転移 / 鉄系超伝導体 / 斜方晶 / 組成依存性 / ネマティック相 |
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| Research Abstract |
In this project, we utilized the angular dependence of magnetic torque as a powerful probe of the "electronic nematicity", which is a state with rotational symmetry breaking recently discussed in strongly correlated electron systems. By using highly sensitive micro cantilever technique, we found in-plane anisotropy of magnetic susceptibility in the normal state of iron-based superconductors as well as in the so-called hidden order phase of heavy-fermion compound URu2Si2. The results established the presence of electronic nematic states in these strongly correlated materials.
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