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Quantum breathers in nonlinear phonon and coupled electron-phonon systems
Gammel, JT; Wang, WZ; Bishop, AR; Salkola, MI; Gammel, JT , LOS ALAMOS NATL LAB, DIV THEORET, LOS ALAMOS, NM 87545 USA.
1997
发表期刊SYNTHETIC METALS
ISSN0379-6779
卷号86期号:40911页码:2215-2216
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.
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
学科领域Physics
收录类别SCI
WOS记录号WOS:A1997WZ98800201
引用统计
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/12509
专题理论物理所1978-2010年知识产出
通讯作者Gammel, JT , LOS ALAMOS NATL LAB, DIV THEORET, LOS ALAMOS, NM 87545 USA.
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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.
APA Gammel, JT,Wang, WZ,Bishop, AR,Salkola, MI,&Gammel, JT , LOS ALAMOS NATL LAB, DIV THEORET, LOS ALAMOS, NM 87545 USA..(1997).Quantum breathers in nonlinear phonon and coupled electron-phonon systems.SYNTHETIC METALS,86(40911),2215-2216.
MLA Gammel, JT,et al."Quantum breathers in nonlinear phonon and coupled electron-phonon systems".SYNTHETIC METALS 86.40911(1997):2215-2216.
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