期刊論文

標題 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 英文
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 荷蘭
公開徵稿
出版型式 紙本