| Project/Area Number |
20740197
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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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 | Kobe University |
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Principal Investigator |
KOTEGAWA Hisashi Kobe University, 大学院・理学研究科, 准教授 (30372684)
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| Project Period (FY) |
2008 – 2009
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| Project Status |
Completed (Fiscal Year 2009)
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| Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2009: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2008: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
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| Keywords | 鉄系超伝導体 / 圧力技術 / 圧力効果 / NMR / 鉄系超伝導 / 高圧 |
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| Research Abstract |
We investigated the pressure effects on Fe-based superconductors through the resistivity and NMR measurement using the pressure cell which can apply the pressure above 4GPa. In FeSe, the superconducting transition temperature of 8K at ambient pressure increased to 37K, and the pressure dependence showed a plateau around 1GPa. In SrFe_2As_2, we found the critical pressure above which superconductivity appears is sensitive to the uniaxial stress along the c-axis. In addition, we found the transition temperature of 37K in Sr_2VFeAsO_3 increases to 46K under pressure.
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