期刊論文

標題 Quantum phonons and the Peierls transition temperature
學年 90
學期 1
出版(發表)日期 2002/01/01
作品名稱 Quantum phonons and the Peierls transition temperature
作品名稱(其他語言)
著者 Zheng, H.; Zhu, S. Y.; Chen, Wei- yeu
單位 淡江大學物理學系
出版者 College Park: American Physical Society
著錄名稱、卷期、頁數 Physical Review B (Condensed Matter and Materials Physics) 65(1), 014304(8 pages)
摘要 The effect of quantum phonons on the Peierls transition temperature in a one-dimensional commensurate system is studied. The nonadiabatic effect due to finite phonon frequency ωp>0 are treated through an energy-dependent electron-phonon scattering function δ(k′,k). By using the Green’s-function perturbation theory we have shown that our theory gives a good description of the effect of quantum phonons: (i) There exists a critical electron-phonon coupling gc2. The Peierls transition temperature Tp=0 when the coupling g2<gc2 and Tp increases with increasing g2>gc2. (ii) The ratio 2Δ/Tp could be much larger than the BCS value 3.527.
關鍵字
語言 英文
ISSN 1098-0121
期刊性質 國外
收錄於 SCI
產學合作
通訊作者
審稿制度
國別 美國
公開徵稿
出版型式 紙本