The properties of the ground state of the nonadiabatically coupled electron-phonon systems with correlated displacement and squeezing

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	The properties of the ground state of the nonadiabatically coupled electron-phonon systems with correlated displacement and squeezing
	X. F. Pang; P. Li
	1999
发表期刊	Acta Physica Sinica-Overseas Edition
ISSN	1004-423X
卷号	8 期号:8 页码:598-606
摘要	Effects of the nonadiabatic phonon fluctuations on the ground state of coupled one-dimensional electron-phonon systems with high and low electron-densities were investigated by a new ansatz including correlated interaction of the displacement and squeezing. The correlated effect resulted in noticeable reduction of ground state energy of the systems, and obvious increases of binding energy of the polarons occurred. Thus, the stabilities of the polaron and of the systems were significantly enhanced, exactly steady ground state of the Holstein model, then, was obtained by the new ansatz for the coupled electron-phonon systems. In general, the new ansatz were found to be very relevant for the strong coupling and large squeezing cases in nonadiabatically coupled electron-photon systems.
部门归属	univ elect sci & technol china, inst high energy phys, chengdu 610054, peoples r china. chinese acad sci, int ctr mat phys, shenyang 110015, peoples r china. sichuan univ, inst atom & mol phys, chengdu 610065, peoples r china.;pang, xf (reprint author), univ elect sci & technol china, inst high energy phys, chengdu 610054, peoples r china
关键词	Molecular-crystal Model Bipolaronic Superconductivity Phase-diagram
URL	查看原文
WOS记录号	WOS:000081700200007
引用统计	被引频次：4[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/37467
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	X. F. Pang,P. Li. The properties of the ground state of the nonadiabatically coupled electron-phonon systems with correlated displacement and squeezing[J]. Acta Physica Sinica-Overseas Edition,1999,8(8):598-606.
APA	X. F. Pang,&P. Li.(1999).The properties of the ground state of the nonadiabatically coupled electron-phonon systems with correlated displacement and squeezing.Acta Physica Sinica-Overseas Edition,8(8),598-606.
MLA	X. F. Pang,et al."The properties of the ground state of the nonadiabatically coupled electron-phonon systems with correlated displacement and squeezing".Acta Physica Sinica-Overseas Edition 8.8(1999):598-606.