The properties of the ground state of strongly coupled electron-phonon systems with squeezing-antisqueezed effect
文献类型：期刊论文
| 作者 | X. F. Pang |
| 刊名 | Journal of Physics and Chemistry of Solids
 |
| 出版日期 | 2000 |
| 卷号 | 61期号:5页码:701-709 |
| 关键词 | electron-phonon systems molecular-crystal model bipolaronic superconductivity quantum fluctuations phase-diagram |
| ISSN号 | 0022-3697 |
| 中文摘要 | Influences of the squeezing-antisqueezed effect of phonons arising from polaron motion on the ground state in strongly coupled electron-phonon systems with high and low electron-densities were studied by a new state ansatz including the correlated effects among displacement and squeezing of phonons and polarons in the Holstein model. The squeezing-antisqueezed effect caused significant decrease of the ground state energy of the systems and increase of the binding energy of the polarons appeared in the systems. Therefore the stabilities of the polaron and of the systems are enhanced simultaneously. The results obtained show that the new state ansatz is very relevant and accurate for the nonadiabatically coupled electron-phonon systems, especially in strongly coupling and large squeezing cases. (C) 2000 Elsevier Science Ltd. All rights reserved. |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/37145]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | X. F. Pang. The properties of the ground state of strongly coupled electron-phonon systems with squeezing-antisqueezed effect[J]. Journal of Physics and Chemistry of Solids,2000,61(5):701-709. |
| APA | X. F. Pang.(2000).The properties of the ground state of strongly coupled electron-phonon systems with squeezing-antisqueezed effect.Journal of Physics and Chemistry of Solids,61(5),701-709. |
| MLA | X. F. Pang."The properties of the ground state of strongly coupled electron-phonon systems with squeezing-antisqueezed effect".Journal of Physics and Chemistry of Solids 61.5(2000):701-709. |
入库方式： OAI收割
来源：金属研究所
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