Study on the newly discovered 80 K-class superconductivity in high-temperature cuprate superconductors
| Project/Area Number |
22540362
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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 | University of Tsukuba |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
KADOWAKI Kazuo 筑波大学, 数理物質系, 教授 (00272170)
IKEDA Hiroshi 筑波大学, 数理物質系, 准教授 (50272167)
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| Project Period (FY) |
2010 – 2012
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| Project Status |
Completed (Fiscal Year 2012)
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| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2012: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2011: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2010: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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| Keywords | 高温超伝導 / 銅酸化物高温超伝導体 / Bi-2201相 / 高い転移温度 / ユニバーサル関係式 / 銅ー頂点酸素距離 / Caドープ / 銅酸化物高温超伝導 / Ca-ドーピング / CuO_2面1層系 / 頂点酸素 / 銅酸化物 / 新超伝導物質 / 不均一性 |
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| Research Abstract |
We succeeded in the present project that the transition temperature (T_c) of the hole-doped cuprate superconductors in Bi-2201 phase was raised up to 86.5 K by partial substitution of Ca for Sr in zero-resistance temperature. The origin of the higher T_c is clarified due to the elongation of the Cu-apical oxygen distance (d_A) for the Ca-doped compounds. The correlation between T_c and d_A was found for whole hole-doped cuprate superconductors.
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Report
(4 results)
Research Products
(19 results)
