| Issue |
Europhys. Lett.
Volume 71, Number 3, August 2005
|
|
|---|---|---|
| Page(s) | 438 - 444 | |
| Section | Condensed matter: electronic structure, electrical, magnetic, and optical properties | |
| DOI | https://doi.org/10.1209/epl/i2005-10091-5 | |
| Published online | 06 July 2005 | |
Vibrational effects in the linear conductance of carbon nanotubes
1
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
Received:
9
March
2005
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
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