| Kinetic energy driven superconductivity in the electron doped cobaltate NaxCoO2 · yH2O | |
|---|---|
| 學年 | 93 |
| 學期 | 2 |
| 出版（發表）日期 | 2005-06-15 |
| 作品名稱 | Kinetic energy driven superconductivity in the electron doped cobaltate NaxCoO2 · yH2O |
| 作品名稱（其他語言） | |
| 著者 | Liu, Bin; Liang, Ying; Feng, Shi-ping; 陳惟堯; Chen, Wei-yeu |
| 單位 | 淡江大學物理學系 |
| 出版者 | Chinese Physical Society/Institute of Theoretical Physics. |
| 著錄名稱、卷期、頁數 | Communications in Theoretical Physics 43(6), pp.1127-1132 |
| 摘要 | Within the charge-spin separation fermion-spin theory, we show that the mechanism of superconductivity in the electron doped cobaltate NaxCoO2centerdotyH2O is ascribed to its kinetic energy. The dressed fermions interact occurring directly through the kinetic energy by exchanging magnetic excitations. This interaction leads to a net attractive force between dressed fermions, then the electron Cooper pairs originating from the dressed fermion pairing state are due to the charge-spin recombination, and their condensation reveals the superconducting ground state. The superconducting transition temperature is identical to the dressed fermion pair transition temperature, and is suppressed to a lower temperature due to the strong magnetic frustration. The optimal superconducting transition temperature occurs in the electron doping concentration δ≈0.29, and then decreases for both underdoped and overdoped regimes, in qualitative agreement with the experimental results. |
| 關鍵字 | |
| 語言 | en |
| ISSN | 0253-6102 |
| 期刊性質 | 國外 |
| 收錄於 | |
| 產學合作 | |
| 通訊作者 | |
| 審稿制度 | 否 |
| 國別 | GBR |
| 公開徵稿 | |
| 出版型式 | ,紙本 |
| 相關連結 |
機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/27454 ) |
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