2009 Fiscal Year Final Research Report
High Pressure Studies on Iron-based Superconductors
| Project/Area Number |
20840037
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| Research Category |
Grant-in-Aid for Young Scientists (Start-up)
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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 | Nihon University |
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Principal Investigator |
OKADA Hironari Nihon University, 文理学部, 助教 (40508751)
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| Project Period (FY) |
2008 – 2009
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| Keywords | 鉄系超伝導 / 圧力効果 / 圧力誘起超伝導 |
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| Research Abstract |
We have performed systematic investigation of pressure effect on superconductivity of iron-based compounds LaFeAsO_<1-x>F_x and related compounds Ca(Fe_<1-x>Co_x)AsF and Fe(Se_<1-x>Te_x). We found that LaFeAsO and CaFeAsF show superconducting transition under high pressure. The transition temperature in CaFeAsF (29K) is higher than that in LaFeAsO (21K), suggesting that CaFeAsF is considered as a candidate parent compound for realizing higher transition temperature. Pressure effect on superconducting transition temperature in Fe(Se_<1-x>Te_x) is suppressed with increasing Te concentration. This result suggests that the structural instability in Fe(Se_<1-x>Te_x) is enhanced by Te substitution.
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Research Products
(12 results)
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[Journal Article] Pressure effects on superconducting and structural properties for nickel-based superconductors LaNiXO (X = P, As)2008
Author(s)
H. Okada, Y. Takahashi, K. Igawa, K. Arii, H. Takahashi, T. Watanabe, H. Yanagi, Y. Kamihara, T. Kamiya, M. Hirano, H. Hosono, S. Nakano, T. Kikegawa
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Journal Title
J. Phys. Soc. Jpn 77
Pages: 119-120
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