摘要
利用形变势模型分析了单层碳纳米管中的电子和长波声学声子的相互作用,并且利用费米黄金规则计算了金属单层碳纳米管的电子弛豫时间和平均自由程。计算结果表明,弛豫时间与温度成正比,与半径成反比,所得结果与实验一致。
The long-wavelength acoustic phonon scattering of electrons in single-walled carbon nanotubes is calculated using deformation potential model.The Fermi golden rule is employed to compute the relaxation time and mean path.Our calculations show that the electron relaxation time of metallic tube varies linearly with diameter and inversely with temperature.
出处
《咸阳师范学院学报》
2009年第4期30-32,共3页
Journal of Xianyang Normal University
基金
咸阳师范学院引进人才基金项目(07XSYK289)
关键词
碳纳米管
长波声学声子
形变势
弛豫时间
carbon nanotubes
long-wavelength acoustic phonon
deformation potential
relaxation time
