The electronic localization lengthsλof metallic carbon nanotubes with different chiral symmetries have been calculated by one parameter scaling method.It is found thatλis independent of the nanotube chirality,but de...The electronic localization lengthsλof metallic carbon nanotubes with different chiral symmetries have been calculated by one parameter scaling method.It is found thatλis independent of the nanotube chirality,but depends linearly on their diameters.The dependence ofλon the disorder strength W has also been studied,and a power-law relation betweenλand W is also found to be independent of the tube chirality.Our numerical results are in good agreement with recent experimental observations and other theoretical result for only the“armchair”nanotubes.展开更多
基金Supported by a grant from the State Key Program of China,the National Natural Science Foundation of China under Grant Nos.10074026 and 29890212by the Grant RFDP.
文摘The electronic localization lengthsλof metallic carbon nanotubes with different chiral symmetries have been calculated by one parameter scaling method.It is found thatλis independent of the nanotube chirality,but depends linearly on their diameters.The dependence ofλon the disorder strength W has also been studied,and a power-law relation betweenλand W is also found to be independent of the tube chirality.Our numerical results are in good agreement with recent experimental observations and other theoretical result for only the“armchair”nanotubes.
