Variable electron-phonon coupling in isolated metallic carbon nanotubes observed by Raman scattering

Maultzsch J (2007)


Publication Status: Published

Publication Type: Journal article

Publication year: 2007

Journal

Publisher: AMERICAN PHYSICAL SOC

Book Volume: 99

Article Number: 027402

Journal Issue: 2

DOI: 10.1103/PhysRevLett.99.027402

Open Access Link: https://arxiv.org/abs/0705.3986

Abstract

We report the existence of broad and weakly asymmetric features in the high-energy (G) Raman modes of freely suspended metallic carbon nanotubes of defined chiral index. A significant variation in peak width (from 12 cm(-1) to 110 cm(-1)) is observed as a function of the nanotube's chiral structure. When the nanotubes are electrostatically gated, the peak widths decrease. The broadness of the Raman features is understood as the consequence of coupling of the phonon to electron-hole pairs, the strength of which varies with the nanotube chiral index and the position of the Fermi energy.

Authors with CRIS profile

How to cite

APA:

Maultzsch, J. (2007). Variable electron-phonon coupling in isolated metallic carbon nanotubes observed by Raman scattering. Physical Review Letters, 99(2). https://doi.org/10.1103/PhysRevLett.99.027402

MLA:

Maultzsch, Janina. "Variable electron-phonon coupling in isolated metallic carbon nanotubes observed by Raman scattering." Physical Review Letters 99.2 (2007).

BibTeX: Download