2011 Fiscal Year Final Research Report
Microscopic Study for Magnetic Order and Superconductivity Near Neighbor to QCP in Non-centrosymmetric Heavy Fermion Compound
| Project/Area Number |
21540366
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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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 | Kochi University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
NISHIOKA Takashi 高知大学, 教育研究部・自然科学系, 教授 (10218117)
KATO Harukazu 高知大学, 教育研究部・自然科学系, 准教授 (60363272)
KOHORI Yoh 千葉大学, 理学研究科, 教授 (10153660)
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| Research Collaborator |
MIZOO Masakazu 高知大学, 総合人間自然科学研究科・理学専攻, 修士課程学生
INAGAKI Takayuki 高知大学, 総合人間自然科学研究科・理学専攻, 修士課程学生
KAWAMURA Yukihiro 高知大学, 総合人間自然科学研究科・応用自然科学専攻, 博士課程学生
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| Project Period (FY) |
2009 – 2011
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| Keywords | 重い電子系 / 空間反転対称性欠損 / 量子臨界点 / 磁気秩序 / 超伝導 / 核磁気共鳴 / 圧力効果 |
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| Research Abstract |
In order to clarify the change of complex magnetic order toward the quantum critical point(QCP) and, as our final goal, the specific properties of the superconductivity near-neighbor to QCP in noncentrosymmetric CeCoGe_3, Co-NQR/ NMR measurements under pressure have been performed. The emergence of the complex magnetic order, successive magnetic transition accompanied by the step-like decrease of the magnetization, is confined to the low pressure below about 0. 7GPa. The magnetic structure in higher pressure becomes a variation of the type uudd ever proposed by the neutron scattering experiments in ambient pressure. The magnetic order-pressure phase diagram toward QCP is deduced.
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[Journal Article] Electronic structure and localized lanthanide character of LnT_2Al_<10>(T=Ru, Os)2011
Author(s)
H. Tanida1, D. Tanaka1, M. Sera, S. Tanimoto, T. Nishioka, M. Matsumura, M. Ogawa, C. Moriyoshi, Y. Kuroiwa, J. E. Kim, N. Tsuji, and M. Takata
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Journal Title
Phys. Rev. B
Volume: 84
Pages: 115128(1)-(8)
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