Longitudinal polarizability of carbon nanotubes

Edward Brothers, Gustavo E. Scuseria, Konstantin N. Kudin

Research output: Contribution to journalArticle

35 Citations (Scopus)


The longitudinal polarizabilities of carbon nanotubes are determined using first principles density functional theory. These results demonstrate that the polarizability per atom of a nanotube in the axial direction is primarily determined by the band gap. In fact, polarizability per atom versus inverse band gap yields a linear trend for all nanotubes and methods utilized in this study, creating a universal relationship for longitudinal polarizability. This can be explained by examining the terms in the sum over states equation used to determine polarizability and noting that the vast majority of the polarizability arises from a few elements near the band gap. This universal trend is then used, with experimentally determined band gaps to predict the experimental polarizability of carbon nanotubes.

Original languageEnglish
Pages (from-to)12860-12864
Number of pages5
JournalJournal of Physical Chemistry B
Issue number26
Publication statusPublished - 6 Jul 2006
Externally publishedYes


ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

Cite this