2010 Fiscal Year Final Research Report
NMR study of uranium-based ferromagnetic superconductors
| Project/Area Number |
21740272
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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 | Japan Atomic Energy Agency |
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Principal Investigator |
TOKUNAGA Yo Japan Atomic Energy Agency, 先端基礎研究センター, 研究副主幹 (00354902)
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| Project Period (FY) |
2009 – 2010
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| Keywords | 強相関系 / 核磁気共鳴 / 超伝導 |
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| Research Abstract |
In order to investigate the relationship between magnetism and superconductivity in f-electron systems, NMR measurements have been performed in several UCoGe samples synthesized with different conditions. We have found that the volume of ferromagnetic phase in the samples increases with increasing their residual resistance ratio (RRR). Since bulk measurements indicate that the volume of superconducting phase also increases with increasing RRR, the NMR result suggests that the ferromagnetic ordering is essential for the occurrence of superconductivity in UCoGe.
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