2019 Fiscal Year Final Research Report
Coexistence of magnetic order and superconductivity in iron-based superconductor studied by nuclear resonant small-angle scattering and Mossbauer Spectroscopy under magnetic fields
| Project/Area Number |
16K05446
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Condensed matter physics II
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| Research Institution | Kyoto University |
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Principal Investigator |
Kitao Shinji 京都大学, 複合原子力科学研究所, 准教授 (00314295)
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| Project Period (FY) |
2016-04-01 – 2020-03-31
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| Keywords | 鉄系超伝導 / メスバウアー分光 / 小角散乱 / 微細組織 / 磁気秩序 |
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| Outline of Final Research Achievements |
Coexistence of magnetic order and superconductivity in iron-based superconductor was studied by nuclear resonant small-angle scattering and Mossbauer Spectroscopy.Some iron-based superconductors have coexistence region in their phase diagram.The nuclear resonant small-angle scattering is newly-developed method suitable for the investigation of microstructure with magnetic states. The results suggested the coexistence state has complicated microstructure without specific size in the regions of a few to few tens of nanometers.
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| Free Research Field |
物性物理学
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| Academic Significance and Societal Importance of the Research Achievements |
新たに開発した核共鳴小角散乱の手法を用いて、一部の鉄系超伝導体の相図の一部の領域において生じている磁気秩序と超伝導の共存状態について、その描像を明らかにすることができた。これにより鉄系超伝導体のメカニズムの解明に向けた研究が進展がすると期待できる。また、核共鳴小角散乱は磁気状態の微細組織の研究に応用できることが実証され、これまでに研究が難しかった磁気状態の微細組織のさまざま研究への波及した展開が期待できる。
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