2017 Fiscal Year Final Research Report
Elucidation and serach of exotic superconducting state in Cr-based superconductor
| Project/Area Number |
15H03689
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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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 | Kobe University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
菅原 仁 神戸大学, 理学研究科, 教授 (60264587)
藤 秀樹 神戸大学, 理学研究科, 教授 (60295467)
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| Research Collaborator |
Goh Swee K.
NOMA Yuichiro
MINAMI Tamio
MATSUSHIMA Kei
KUWATA Yoshiki
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Keywords | 超伝導 / 磁性 / 圧力効果 / 核磁気共鳴 / 量子相転移 |
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| Outline of Final Research Achievements |
Motivated by a discovery of pressure-induced superconductivity in CrAs, we performed an elucidation of electronic state of CrAs and materials with similar zig-zag structure, and searched new exotic Cr- and Mn-based superconductor. NMR measurement revealed spin susceptibility of CrAs increases toward low temperature, indicating that CrAs possesses a magnetic correlation close to ferromagnetic one. We succeeded in synthesizing a single crystal of RuAs with the same crystal structure to CrAs, and revealed a crystal structure in the insulating state.
For a search of new exotic superconductor, we synthesized several materials and investigated the substitution effect and pressure effect. We succeeded in suppressing the magnetically-ordered state in some materials, but superconductivity does not occur.
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| Free Research Field |
低温物性物理
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