论文部分内容阅读
基于Landauer公式 ,研究了有限长的非公度和公度双壁碳纳米管的电子输运性顾 ,结果表明 ,双壁管的几何结构对其电子输运性质有显著的影响 :非公度的双壁碳管的电导随能量的不同 ,既可以是弹道型的 ,也可以是非弹道型的 ;由armchair管组成的公度的双壁碳管的电导随能量变化呈现快速的电导振荡 ,并且此快速振荡叠加在背景慢振荡上 ,而zigzag管组成的公度双壁管的电导随能量变化只有快速振荡、没有规则的慢振荡背景 .
Based on the Landauer formula, the electron transport properties of a finite length of carbon nanotubes in both inhomogeneous and public domains were studied. The results show that the geometry of the double-walled tube has a significant effect on the electron transport properties: The electrical conductivity of double-walled carbon nanotubes varies with energy, either ballistic or non-ballistic; the conductance of double-walled carbon nanotubes composed of armchair tubes exhibits rapid conductance oscillations as energy changes, and The rapid oscillation superimposed on the background slow oscillation, and the zigzag tube composition of the degree of double-wall tube conductance with energy change only rapid oscillation, there is no regular slow oscillation background.