| 金属纳米线弯曲形状引起的量子电导相干振荡 |
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| 引用本文： | 杨谋,周光辉,史小川.金属纳米线弯曲形状引起的量子电导相干振荡[J].湖南师范大学自然科学学报,2002,25(4):38-41. |
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| 作者姓名： | 杨谋 周光辉 史小川 |
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| 作者单位： | 1. 湖南师范大学物理与信息学院物理系,中国,长沙,410081
2. 华北电力大学基础科学系,中国,北京,102206 |
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| 基金项目： | TheresearchsupportedbytheScienceFoundationofHunanNormalUniversityunderGrand(2 0 0 0 6 2 7) |
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| 摘 要： | 利用自由电子模型和散射矩阵方法，研究两端直中间部分呈圆弧形弯曲的金属纳米线电导的量子相干振荡，发现低温下系统的电导在完全直金属纳米线电导常数下振荡，它起源于金属纳米线形状引起电子横向模式间的混合导致传导电子相干，这种效应在未来纳米电路工程设计中可能有重要应用价值。
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| 关 键 词： | 金属纳米线 弯曲形状 量子电导相干振荡 散射矩阵 自由电子模型 传导电子相干 |
Shape Induced Quantum Conductance Oscillation in a Metallic Nanowire |
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| Abstract.Shape Induced Quantum Conductance Oscillation in a Metallic Nanowire[J].Journal of Natural Science of Hunan Normal University,2002,25(4):38-41. |
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| Authors: | Abstract |
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| Abstract: | Using free-electron model and scattering matrix approach,investigated the electron transport properties of a curved metallic nanowire which is consist of two straight nanowires connected by a curving part with uniform wire cress section.We found that in the zero temperature limit the electrical conductance of the system oscillate below the conductance value of a straight wire,this shape induced quantum conductance oscillation may origin from the quantum coherence mixture between the transverse modes in the curving part of the system,and this effect may be important in the future's nano-scale circuit engineering. |
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| Keywords: | curved nanowires scattering matrix quantum conductance |
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