2010 Fiscal Year Final Research Report
Exploration for Exotic Superconductivity and novel electronic state in Some Strongly Correlated Electron Compounds by DC Magnetic Measurements under 10 GPa Class High Pressure
| Project/Area Number |
20540355
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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 | Shimane University |
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Principal Investigator |
MIYOSHI Kiyotaka Shimane University, 総合理工学部, 准教授 (10294365)
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| Co-Investigator(Renkei-kenkyūsha) |
TAKEUCHI Jun 島根大学, 総合理工学部, 教授 (00135899)
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| Project Period (FY) |
2008 – 2010
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| Keywords | 強相関電子系 / 鉄系超伝導 / 高圧力 / パイロクロア |
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| Research Abstract |
Characteristic pressure dependences of T_c have been successfully revealed by DC magnetic measurements under high pressure up to 10 GPa for β pyrochlore oxide AOs_2O_6 (A=K, Rb, Cs), iron pnictide superconductor FeSe_x and LiFeAs using miniature diamond anvil cell combined with commercial SQUID magnetometer. It has been also found that the first order transition at T_s=155K for Li_xCoO_2 (0.46≦x≦0.71) strongly correlates with the ordering of Li ions below TF=130K, suggesting the possible charge ordering in CoO_2 layers below T_s=155K.
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Research Products
(25 results)
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[Presentation] Li_xCoO_2単結晶の電子状態22010
Author(s)
池戸一道, 須田山貴亮, 脇坂祐輝, 溝川貴司, 岩井千佳, 三好清貴, 竹内潤, N.L.Saini、有田将司、生天目博文、谷口雅樹、池戸一道、三好清貴、竹内潤
Organizer
日本物理学会2010年秋季大会
Place of Presentation
大阪府立大学中百舌鳥キャンパス
Year and Date
2010-09-26
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[Presentation] Li_xCoO_2単結晶の電子状態2010
Author(s)
池戸一道, 須田山貴亮, 脇坂祐輝, 溝川貴司, 岩井千佳, 三好清貴, 竹内潤, H.Wadati, G.A.Sawatzky, D.G.Hawthorn, T.Z.Regier
Organizer
日本物理学会 第65回年次大会
Place of Presentation
岡山大学(岡山市)
Year and Date
2010-03-22
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[Remarks] 特になし
