The properties of nonadiabatic fluctuations in strongly coupled electron-phonon systems with correlated displacement and squeezing
文献类型：期刊论文
| 作者 | P. Xiao-Feng |
| 刊名 | International Journal of Modern Physics B
 |
| 出版日期 | 2002 |
| 卷号 | 16期号:31页码:4783-4808 |
| 关键词 | electron-phonon coupling nonadiabatic fluctuation displacement and squeezing polaron molecular-crystal model quantum fluctuations phase-diagram ground-state polaron light |
| ISSN号 | 0217-9792 |
| 中文摘要 | A new variational ansatz for the coherent phonons with correlated displacement and squeezing, including interaction with electrons are used to study the properties of (i) the nonadiabatic phonon fluctuation on the ground state, (ii) the uncertainty principle, (iii) the phonon-staggered ordering, and (iiv) the charge-density wave order, of the systems due to fluctuations of the electron density in a coupled electron-phonon systems. The results obtained show that the correlation effect can lower the energy of the ground state of the systems, enhance the stabilization of the polaron and suppress the quantum increase of the classical polaron narrowing of electron band. Moreover, it add to the effects of nonadiabaticity on the minimum quantum uncertainty for the phonon coordinate by a strong coupling with the electron density for a large squeezing as compared with the adiabatic case and the uncorrelated case. Therefore, the new ansatz which can represent the correlation effects of displacement and squeezing is especially relevant for system with sufficiently large squeezing and strong coupling. |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/36470]  |
| 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 | P. Xiao-Feng. The properties of nonadiabatic fluctuations in strongly coupled electron-phonon systems with correlated displacement and squeezing[J]. International Journal of Modern Physics B,2002,16(31):4783-4808. |
| APA | P. Xiao-Feng.(2002).The properties of nonadiabatic fluctuations in strongly coupled electron-phonon systems with correlated displacement and squeezing.International Journal of Modern Physics B,16(31),4783-4808. |
| MLA | P. Xiao-Feng."The properties of nonadiabatic fluctuations in strongly coupled electron-phonon systems with correlated displacement and squeezing".International Journal of Modern Physics B 16.31(2002):4783-4808. |
入库方式： OAI收割
来源：金属研究所
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