Conductance and coherence lengths in disordered carbon nanotubes: role of lattic

2020-02-28 07:03:29

carbon defects induced nanotubes phonon

责任者: Roche, S.;Jie Jiang;Triozon, F.;Saito, R. 单位: CEA, Grenoble, France 来源出处: Physical Review B (Condensed Matter and Materials Physics)(Phys. Rev., B, Condens, Matter Mater. Phys. (USA)),15 Sept. 2005,72(11):113410-1 摘要: We report on a theoretical study of quantum transport in carbon nanotubes in the presence of two different sources of scattering: a static short-range random potential that simulates lattice defects, superimposed onto a long-range time-dependent perturbation that mimics the phonon-induced real-space atomic displacements. In the weak-localization regime, fluctuations of the coherent length scales are shown to be driven by band-structure features, whereas the phonon-induced delocalization effect occurs in the stronger-localization regime 关键词: band structure;carbon nanotubes;crystal defects;electron-phonon interactions;mesoscopic systems;perturbation theory;quantum interference phenomena;vibrational modes;conductance;coherence lengths;disordered carbon nanotubes;lattice defects;phonon modes;quantum transport;scattering;static short-range random potential;long-range time-dependent perturbation;phonon-induced real-space atomic displacements;localization;band structure;phonon-induced delocalization effect;C