Physica B: Condensed Matter ( IF 2.8 ) Pub Date : 2021-04-20 , DOI: 10.1016/j.physb.2021.413063 Ali A. Abdulhussain , M.J. Majid
The conductance and I–V characteristics are presented for SWCNTs under the influence of the longitudinal magnetic field and mechanical deformation. The electrical properties of zig-zag (9,0), armchair (10,10) and chiral (15,6) SWCNTs have been studied analytically at zero temperature under the influence of the uniaxial and torsional deformation in addition to the longitudinal magnetic field. The calculations of current and conductance are carried out by using the Landauer-Büttiker formula, which is expressed in term of the energy spectrum expression, that derived by using the tight binding approximation. It is shown that the behavior of the conductance and I–V characteristics of SWCNTs can be modified and controlled under the effect of the mechanical deformation and magnetic field. Thus, the magnetic field may enhance the effect of the mechanical deformation and improve the electronic properties, or may be cancelled it depending on the chirality of SWCNTs or the type of deformation.
中文翻译:
变形和磁场作用下单壁碳纳米管的电子输运性质
在纵向磁场和机械变形的影响下,给出了碳纳米管的电导和IV特性。在纵向温度和单轴和扭转变形的影响下,已在零温度下以解析方式研究了之字形(9,0),扶手椅(10,10)和手性(15,6)SWCNT的电性能。 。电流和电导的计算是使用Landauer-Büttiker公式进行的,该公式以能谱表示形式表示,该公式是使用紧密结合近似法得出的。结果表明,电导和IV的行为可以在机械变形和磁场的作用下修改和控制SWCNT的特性。因此,磁场可以增强机械变形的效果并改善电子性能,或者可以取决于SWCNT的手性或变形的类型将其抵消。