| 一维介观环中持续电流的电子-声子相互作用非经典效应 |
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| 引用本文： | 罗质华,梁国栋.一维介观环中持续电流的电子-声子相互作用非经典效应[J].物理学报,2011,60(3):37303-037303. |
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| 作者姓名： | 罗质华 梁国栋 |
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| 作者单位： | (1)广东第二师范学院物理系,广州 510303; (2)暨南大学光电工程系,广州 510632 |
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| 基金项目： | 国家自然科学基金(批准号: 10574163)资助的课题. |
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| 摘 要： | 基于声子相干态功效和计及声子压缩态非经典效应,研究了电子-磁振子和电子-声子相互作用对一维介观环持续电流的影响. 与自由环比较,由于电子-磁振子相互作用,持续电流的振幅呈现指数减小. 对于正常态电子,电子-声子相互作用导致持续电流以Debye-Waller(D-W)因子衰减.但是计入跳步电子-单声子相干态关联效应导致系统本征态能量大幅度下降,从而持续电流In有大幅度增加.另一方面计入双声子相干态行为,由于声子压缩态效应压缩电子-相干(态)声子弹性散射行为,导致电子绕环运
关键词：
持续电流
电子-声子相互作用
声子相干态
声子压缩态效应
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| 关 键 词： | 持续电流 电子-声子相互作用 声子相干态 声子压缩态效应 |
| 收稿时间： | 2010-05-31 |
Non-classical state effect on the persistent current in one-dimensional mesoscopic ring with electron-phonon interaction |
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| Luo Zhi-Hua,Liang Guo-Dong.Non-classical state effect on the persistent current in one-dimensional mesoscopic ring with electron-phonon interaction[J].Acta Physica Sinica,2011,60(3):37303-037303. |
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| Authors: | Luo Zhi-Hua Liang Guo-Dong |
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| Institution: | Department of Physics, Guangdong University of Education, Guangzhou 510303, China;Department of Optoelectronic Engineering, Jinan University, Guangzhou 510632, China |
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| Abstract: | Based on the efficacy of the phonon coherent state and with consideration of the non-classical effect of the squeezed state of phonon,the influence of the electron-magnon interaction and the electron-phonon interaction on the persistent current in one-dimensional mesoscopic ring is studied. Compared with the free ring,our study shows that in one-dimensional mesoscopic ring,the amplitude of the persistent current exponentially diminishes due to the electron-magnon interaction. For the normal state electron,t... |
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| Keywords: | persistent current electron-phonon interaction phonon coherent state squeezed phonon state |
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