Transport properties of double-walled carbon nanotube quantum dots
Mesoscale and Nanoscale Physics
2009-11-13 v1
Abstract
The transport properties of quantum dot (QD) systems based on double-walled carbon nanotube (DWCNT) are investigated. The interplay between microscopic structure and strong Coulomb interaction is treated within a bosonization framework. The linear and nonlinear G-V-V_g characteristics of the QD system is calculated by starting from the Liouville equation for the reduced density matrix. Depending on the intershell couplings, an 8-electron periodicity of the Coulomb blockade peak spacing in the case of commensurate DWCNT QDs and a 4-electron periodicity in the incommensurate case are predicted. The contribution of excited states of DWCNTs to the nonlinear transport is investigated as well.
Keywords
Cite
@article{arxiv.0708.1436,
title = {Transport properties of double-walled carbon nanotube quantum dots},
author = {Shidong Wang and Milena Grifoni},
journal= {arXiv preprint arXiv:0708.1436},
year = {2009}
}
Comments
18 pages, 7 figures