Quantum breathers in nonlinear phonon and coupled electron-phonon systems
文献类型：会议论文
| 作者 | Gammel, JT; Wang, WZ; Bishop, AR; Salkola, MI |
| 出版日期 | 1997 |
| 会议日期 | JUL 28-AUG 02, 1996 |
| 会议地点 | SNOWBIRD, UT |
| 卷号 | 86 |
| 期号 | 1-3 |
| DOI | 10.1016/S0379-6779(97)81098-3 |
| 页码 | 2215-2216 |
| 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. |
| 会议录 | SYNTHETIC METALS
 |
| 会议录出版者 | ELSEVIER SCIENCE SA |
| 会议录出版地 | LAUSANNE |
| 语种 | 英语 |
| URL标识 | 查看原文 |
| ISSN号 | 0379-6779 |
| WOS研究方向 | Materials Science ; Physics ; Polymer Science |
| 源URL | [http://ir.itp.ac.cn/handle/311006/23792]  |
| 专题 | SCI会议论文 |
| 作者单位 | 1.CHINESE ACAD SCI, INST THEORET PHYS, BEIJING 100080, PEOPLES R CHINA 2.MCMASTER UNIV, DEPT PHYS & ASTRON, HAMILTON, ON L8S 4M1, CANADA |
| 推荐引用方式 GB/T 7714 | Gammel, JT,Wang, WZ,Bishop, AR,et al. Quantum breathers in nonlinear phonon and coupled electron-phonon systems[C]. 见:. SNOWBIRD, UT. JUL 28-AUG 02, 1996. |
入库方式： OAI收割
来源：理论物理研究所
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