| Pyrene分子(小片石墨晶体)的电子传导特性 |
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| 引用本文： | 王利光,张鸿宇,陈蕾,李勇,郁鼎文,田上胜规,塚田捷. Pyrene分子(小片石墨晶体)的电子传导特性[J]. 人工晶体学报, 2007, 36(5): 1026-1030,1021 |
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| 作者姓名： | 王利光 张鸿宇 陈蕾 李勇 郁鼎文 田上胜规 塚田捷 |
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| 作者单位： | 江南大学理学院,无锡,214122;南京大学固体微结构国家重点实验室,南京,210093;清华大学国家摩擦重点实验室微纳分室,北京,100084;早稻田大学纳米技术研究中心 120-5,东京 162-00041,日本 |
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| 基金项目： | The project supported by the State Key Develoment Program for Basic Research of China(2003CB716204)，the Key Project of the Education Department of China(2005360563)，the Key Laboratory of Advanced Photonic and Electronic Materials of Jiangsu，the State Key Laboratory of Solid State Microstructures in Nanjing University. |
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| 摘 要： | 利用量子理论中基于Green函数的tight-binding方法,对pyrene分子的电子传导和电子流分布进行了理论研究。在考虑到界面耦合和Hopping积分的情况下,得出了电子透射谱和流分布的模拟结果。结果显示透射与电子的能量紧密相关;谱的振荡特征是能级量子化的结果;流分布有着特定的方向,并且在每一个原子点上符合Kirchhoff量子流守恒定律。另外还发现了桥接pyrene分子的正负能开关特性。
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| 关 键 词： | 石墨晶片 Pyrene分子 电导 电流分布 |
| 文章编号： | 1000-985X（2007）05-1026-05 |
| 修稿时间： | 2007-06-26 |
Electronic Conductance of Pyrene Molecule (A Piece of Graphite Crystal) |
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| WANG Li-guang,ZHANG Hong-yu,CHEN Lei,LI Yong,YU Ding-wen,Katsunori Tagami,Masaru Tsukada. Electronic Conductance of Pyrene Molecule (A Piece of Graphite Crystal)[J]. Journal of Synthetic Crystals, 2007, 36(5): 1026-1030,1021 |
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| Authors: | WANG Li-guang ZHANG Hong-yu CHEN Lei LI Yong YU Ding-wen Katsunori Tagami Masaru Tsukada |
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| Affiliation: | 1. School of Science, Southem Yangtze University, Wuxi 214122,China;2. Key Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093,China;3. Division of M/Nano Manufacturing, State Key Laboratory of Tribology, Tsinghua University, Beijing 100084 ,China;4. Nano Technology Research Centre, Waseda University, Tokyo 162-00041, Japan |
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| Abstract: | The electronic conductance and the current distributions of the pyrene molecule is investigated theoretically by using the quantum theory, in which the tight-binding method based on Green's function and the hoping at the interface is adopted. The theoretical results show that the electron conductance spectrum depends on the electronic energy, the conductance currents have the definite direction and agree well with Kirchhoff quantum current conservation. In addition, the plus-minus energy switching function of the pyrene molecular bridge is found. |
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| Keywords: | graphite crystal sheet pyrene molecule electronic conductance current distribution |
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