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题名: Quantum breathers in nonlinear phonon and coupled electron-phonon systems
作者: Gammel, JT ;  Wang, WZ ;  Bishop, AR ;  Salkola, MI
刊名: SYNTHETIC METALS
出版日期: 1997
卷号: 86, 期号:40911, 页码:2215-2216
学科分类: Physics
通讯作者: Gammel, JT , LOS ALAMOS NATL LAB, DIV THEORET, LOS ALAMOS, NM 87545 USA.
部门归属: CHINESE ACAD SCI, INST THEORET PHYS, BEIJING 100080, PEOPLES R CHINA; MCMASTER UNIV, DEPT PHYS & ASTRON, HAMILTON, ON L8S 4M1, CANADA
英文摘要: Nonlinear quantum phonon excitations are studied in 1D lattice models for both effective nonlinear phonon and coupled electron-phonon systems. Multi-phonon bound states exist which are eigenstates of the system Hamiltonian, and which are natural counterparts of breather solutions of classical nonlinear systems. These quantum breather states form particle-like bands and are characterized by a finite coherence length. Due to their structure and dynamics, quantum breathers have specific experimentally observable responses in many correlation functions. In the pure phonon model, the dynamic structure factor is found to have significant intensity for the breather states, with a corresponding quenching of the neighboring bands of multi-phonon extended states. In the coupled electron-phonon model, IR and optical absorption spectra for breathers are reported.
收录类别: SCI
WOS记录号: WOS:A1997WZ98800201
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/12509
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
Gammel, JT,Wang, WZ,Bishop, AR,et al. Quantum breathers in nonlinear phonon and coupled electron-phonon systems[J]. SYNTHETIC METALS,1997,86(40911):2215-2216.
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