期刊論文
| 學年 | 77 |
|---|---|
| 學期 | 1 |
| 出版（發表）日期 | 1989-01-01 |
| 作品名稱 | The Occurrence of Bulk Superconductivity in the TlBa2CuO5−δ-Type (1021) System |
| 作品名稱（其他語言） | |
| 著者 | Ku, H. C.; Shi, J. B.; Ling, D. C.; Hsu, S. W.; Hwang, G. H.; Lin, T. Y. |
| 單位 | 淡江大學物理學系 |
| 出版者 | Japan Society of Applied Physics |
| 著錄名稱、卷期、頁數 | Japanese Journal of Applied Physics 28pt2(6), pp.L923-L925 |
| 摘要 | Stable and reproducible superconductivity in the Tl(Ba2−xLax)CuO5−δ (0.0≤x≤0.6) system with the tetragonal TlBa2CuO5−δ-type (1021) structure was reported. A Prototype compound TlBa2CuO5−δ had shown a metastable superconducting onset around 25 K, with zero resistivity at 10 K. With partial substitution of La for Ba ions, Tc (50% resistivity drop) increases to 45 K, Tc0 (zero resistivity) to 42 K and onset around 50 K. A diamagnetic signal was observed with onset as high as 57 K. Tetragonal lattice parameters decrease with the increasing La concentration due to the partial replacement of larger Ba2+ ions by smaller La3+ ions. The Pairing field energy of 170 K and electron-elementary excitation coupling constant λ of 0.76 were derived from the BCS-like Tc formula through comparison with other single Tl–O layer systems TlCan−1Ba2CunO2n+3−δ. |
| 關鍵字 | |
| 語言 | en |
| ISSN | 1347-4065 |
| 期刊性質 | 國外 |
| 收錄於 | SCI |
| 產學合作 | |
| 通訊作者 | |
| 審稿制度 | 否 |
| 國別 | JPN |
| 公開徵稿 | |
| 出版型式 | ,電子版 |
| 相關連結 |
機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/79953 ) |