Surface scattering in metallic nanowires

被引：20

作者：

Chen, Xi ^{[1
]}

Victora, R. H. ^{[2
]}

机构：

[1] Univ Minnesota, Sch Phys & Astron, Minneapolis, MN 55455 USA

[2] Univ Minnesota, Dept Elect & Comp Engn, Minneapolis, MN 55455 USA

来源：

APPLIED PHYSICS LETTERS | 2008年 / 93卷 / 16期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1063/1.3006050

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Electronic transport with surface scattering in metallic nanowires is studied theoretically based on an atomistic tight-binding approach. It is shown that the mean free path (MFP) strongly depends on the size of the wire and the scattering potential at the surface. In the weak scattering regime, the MFP grows with the wire diameter in an oscillatory manner. A perturbation theory is developed to explain this finite size effect. For narrow wires with small roughness, we show that the surface can be the dominant source of scattering and increases the resistivity well above the bulk value, which will adversely impact the future application of nanowire. (C) 2008 American Institute of Physics. [DOI: 10.1063/1.3006050]

引用

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