Curvature effects in the D* band of small diameter carbon nanotubes

Autor(en)

Jenö Kürti, Viktor Zólyomi, János Koltai, Ferenc Simon, Rudolf Pfeiffer, Hans Kuzmany

Abstrakt

The energy dispersion of the D* (G') band shows a strong diameter dependence according to Raman measurements on double walled carbon nanotubes. The Raman shift of the small diameter inner tubes shows an average softening. There is an oscillation around an average linear behavior with slopes of 108 cm(-1)/eV and 61 cm(-1)/eV for the outer and inner tubes, respectively. We show that the experimental observation can be reproduced by simple model calculations if the curvature effects are taken into account. The phonon softening with increasing curvature was proven by first principles calculations

Organisation(en)

Dynamik Kondensierter Systeme

Externe Organisation(en)

Eötvös Loránd University Budapest, Budapest University of Technology and Economics

Journal

Physica Status Solidi. B: Basic Research

Band

244

Seiten

4261-4264

Anzahl der Seiten

4

ISSN

0370-1972

DOI

https://doi.org/10.1002/pssb.200776168

Publikationsdatum

2007

Peer-reviewed

Ja

ÖFOS 2012

210006 Nanotechnologie

Link zum Portal

https://ucris.univie.ac.at/portal/de/publications/curvature-effects-in-the-d-band-of-small-diameter-carbon-nanotubes(fa01a3b8-962d-4465-9080-6e1099fac055).html