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.
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.
出处
《湖南师范大学自然科学学报》
EI
CAS
北大核心
2002年第4期38-41,共4页
Journal of Natural Science of Hunan Normal University
基金
TheresearchsupportedbytheScienceFoundationofHunanNormalUniversityunderGrand(2 0 0 0 6 2 7)