Impurity mediated in absorption continuum in single walled carbon nanotubes

Authors

Chao Zhang, University of WollongongFollow
J. C. Cao, Chinese Academy of Sciences
Xiao-Bing Guo, Chinese Academy of SciencesFollow
Feng T. Liu, University of UtahFollow

RIS ID

19100

Publication Details

Zhang, C., Cao, J., Guo, X. Liu, F. T. (2007). Impurity mediated in absorption continuum in single walled carbon nanotubes. Applied Physics Letters, 90 (2), 023106-1-023106-3.

Abstract

The authors demonstrate that in single-walled carbon nanotubes, a weak impurity potential can leadto a strong above-gap absorption continuum. The total absorption is enhanced due to the intrabandand indirect transitions, as well as plasmon excitations, which are forbidden in perfect nanotubes.Such impurity induced absorption is strongly dependent on the size and chirality of the tube.