Boltzmann conductivity of a carbon nanotube in magnetic fields

2019-10-17 10:39:27

conductivity magnetic carbon Japan Fermi

责任者: Seri, T.;Ando, T. 单位: Inst. for Solid State Phys., Tokyo Univ., Japan 来源出处: Journal of the Physical Society of Japan(J. Phys. Soc. Jpn. (Japan)),1997/01/,66(1):169-73 摘要: The magnetoconductivity of single-shell carbon nanotubes is calculated in the effective-mass approximation. The conductivity changes sensitively as a function of the Fermi-level position and a magnetic field perpendicular to the tube axis. In the limit of high magnetic fields, the conductivity becomes insensitive to whether the nanotube is metallic or semiconducting and to the presence of a magnetic flux passing through the cross section. Undoped metallic nanotubes exhibit a large positive magnetoresistance in agreement with recent experiments for bundles 关键词: Boltzmann equation;carbon;effective mass;Fermi level;high field effects;magnetoresistance;nanostructured materials;Boltzmann conductivity;magnetoconductivity;single-shell C nanotubes;effective-mass approximation;Fermi-level position;high magnetic fields limit;magnetic flux;positive magnetoresistance;C