| 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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| Project Status |
Completed (Fiscal Year 2010)
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| Budget Amount *help |
¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2010: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2009: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2008: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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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 / 鉄系化合物 / 超伝導 / 圧力下磁化測定 / 遷移金属酸化物 / ラットリング |
|---|
| 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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