| Thermal conductivity in the doped two-leg ladder antiferromagnet Sr_14-x Ca_x Cu_24 O_41 | |
|---|---|
| 學年 | 93 |
| 學期 | 2 |
| 出版（發表）日期 | 2005-02-01 |
| 作品名稱 | Thermal conductivity in the doped two-leg ladder antiferromagnet Sr_14-x Ca_x Cu_24 O_41 |
| 作品名稱（其他語言） | |
| 著者 | Qin, Jihong; Feng, Shiping; Yuan, Feng; Chen, Wei-yeu |
| 單位 | 淡江大學物理學系 |
| 出版者 | Amsterdam: Elsevier BV * North-Holland |
| 著錄名稱、卷期、頁數 | Physics Letters. Section A: General, Atomic and Solid State Physics 335(5-6), pp.477-485 |
| 摘要 | Within the t-J model, the heat transport of the doped two-leg ladder material Sr14-xCaxCu24O41 is studied in the doped regime where superconductivity appears under pressure in low temperatures. The energy dependence of the thermal conductivity κc(ω) shows a low-energy peak, while the temperature dependence of the thermal conductivity κc(T) is characterized by a broad band. In particular, κc(T) increases monotonously with increasing temperature at low temperatures T<0.05J, and is weakly temperature-dependent in the temperature range 0.05J<T<0.1J, then decreases for temperatures T>0.1J, in qualitative agreement with experiments. Our result also shows that although both dressed holons and spinons are responsible for the thermal conductivity, the contribution from the dressed spinons dominates the heat transport of Sr14-xCaxCu24O41. |
| 關鍵字 | |
| 語言 | en |
| ISSN | 0375-9601 |
| 期刊性質 | 國外 |
| 收錄於 | SCI |
| 產學合作 | |
| 通訊作者 | |
| 審稿制度 | |
| 國別 | NLD |
| 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/987654321/27886 ) |
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