Magnetoresistance of Carbon Nanotubes: From Molecular to Mesoscopic Fingerprints

Stephan Roche; Riichiro Saito

doi:10.1103/PhysRevLett.87.246803

Magnetoresistance of Carbon Nanotubes: From Molecular to Mesoscopic Fingerprints

Stephan Roche and Riichiro Saito

Phys. Rev. Lett. 87, 246803 – Published 26 November 2001

Abstract

A magnetoresistance study of carbon nanotubes demonstrates that, for small diameters, the location of the chemical potential and the orientation of the magnetic field are parameters that enable tuning from positive to negative magnetoresistance, a phenomenon not related with weak localization. For larger diameters $(\geq 10 nm)$ , the conventional mesoscopic behavior of magnetotransport is recovered.

Received 2 August 2001

DOI:https://doi.org/10.1103/PhysRevLett.87.246803

Authors & Affiliations

Stephan Roche^1,* and Riichiro Saito²

¹Commissariat à l'Énergie Atomique, DRFMC/SPSMS, 17 rue des Martyrs, 38054 Grenoble Cedex 9, France
²Department of Electronic Engineering, University of Electro-communications, 1-5-1 Chofugaoka Chofu, Tokyo 182-8585, Japan