Volume 71, Number 3, August 2005
|Page(s)||438 - 444|
|Section||Condensed matter: electronic structure, electrical, magnetic, and optical properties|
|Published online||06 July 2005|
Vibrational effects in the linear conductance of carbon nanotubes
Institute for Theoretical Physics, University of Regensburg D-93040 Regensburg, Germany
2 Institute for Physical Chemistry, Technical University of Dresden D-01069 Dresden, Germany
3 INFM and Dipartimento di Ingegneria Elettronica, Università di Roma “Tor Vergata” I-00133 Roma, Italy
Accepted: 30 May 2005
We study the influence of structural lattice fluctuations on the elastic electron transport in single-wall carbon nanotubes within a density-functional-based scheme. In the linear-response regime, the linear conductance is calculated via configurational averages over the distorted lattice. Results obtained from a frozen-phonon approach as well as from molecular-dynamics simulations are compared. We further suggest that the effect of structural fluctuations can be qualitatively captured by the Anderson model with bond disorder. The influence of individual vibrational modes on the electronic transport is discussed as well as the role of zero-point fluctuations.
PACS: 73.63.-b – Electronic transport in nanoscale materials and structures / 73.63.Fg – Nanotubes / 63.22.+m – Phonons or vibrational states in low-dimensional structures and nanoscale materials
© EDP Sciences, 2005
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.