| 一维介观系统的隧道电流零频散粒噪声谱密度 |
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| 引用本文： | 朱主祥,郑大昉,刘有延.一维介观系统的隧道电流零频散粒噪声谱密度[J].物理学报,1999,48(2):302-313. |
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| 作者姓名： | 朱主祥 郑大昉 刘有延 |
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| 作者单位： | (1)华南理工大学物理系，广州 510641；中国科学院国际材料物理中心，沈阳 110015; (2)华南师范大学物理系，广州 510631 |
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| 基金项目： | 广东省自然科学基金(批准号：970446)资助的课题. |
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| 摘 要： | 导出了一维介观系统隧道结的以非平衡格林函数(闭路格林函数)表示的电流散粒噪声谱密度表达式，对隧道结中无杂质及含杂质两种情形下的电流零频散粒噪声谱密度随系统各物理参数的关系做了详细的计算及讨论.
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| 关 键 词： | 隧道电流 噪声谱密度 一维介观系统 介观物理 |
| 收稿时间： | 1997-11-21 |
SPECTRAL DENSITY FOR THE TUNNELING CURRENT ZERO-FREQUENCY SHOT-NOISE IN A ONE-DIMENTIONAL MESOSCOPIC SYSTEM |
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| ZHU ZHU-XIANG,ZHENG DA-FANG and LIU YOU-YAN.SPECTRAL DENSITY FOR THE TUNNELING CURRENT ZERO-FREQUENCY SHOT-NOISE IN A ONE-DIMENTIONAL MESOSCOPIC SYSTEM[J].Acta Physica Sinica,1999,48(2):302-313. |
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| Authors: | ZHU ZHU-XIANG ZHENG DA-FANG and LIU YOU-YAN |
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| Institution: | ZHU ZHU-XIANG;(Department of Physics,South China
Normal University,Guangzhou 510631);ZHENG DA-FANG LIU YOU-YAN;(Department of Physics,South China
University of Technology,Guangzhou 510641;
International Center for Materials Physics,Chinese Academy of Sciences,Shenyang 110015) |
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| Abstract: | We have derived the expression of the spectral density for the current shot-noise in terms of the nonequilibrium Green's functions(closed-path Green's functions) for a one-dimentional mesoscopic junction, and performed numerical calculations to discuss the dependence of the zero frequency spectral density for the currentshot-noise on other variables when the tunnling junction is pure or impure. |
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