Spin Splitting and Even-Odd Effects in Carbon Nanotubes

David H. Cobden; Marc Bockrath; Paul L. McEuen; Andrew G. Rinzler; Richard E. Smalley

doi:10.1103/PhysRevLett.81.681

Spin Splitting and Even-Odd Effects in Carbon Nanotubes

David H. Cobden, Marc Bockrath, Paul L. McEuen, Andrew G. Rinzler, and Richard E. Smalley

Phys. Rev. Lett. 81, 681 – Published 20 July 1998

Abstract

The level spectrum of a single-walled carbon nanotube rope, studied by transport spectroscopy, shows Zeeman splitting in a magnetic field parallel to the tube axis. The pattern of splittings implies that the spin of the ground state alternates by $\frac{1}{2}$ as consecutive electrons are added. Other aspects of the Coulomb blockade characteristics, including the current-voltage traces and peak heights, also show corresponding even-odd effects.

Received 19 March 1998

DOI:https://doi.org/10.1103/PhysRevLett.81.681

Authors & Affiliations

David H. Cobden^*, Marc Bockrath, and Paul L. McEuen

Department of Physics, University of California and Materials Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720

Andrew G. Rinzler and Richard E. Smalley

Center for Nanoscale Science and Technology, Rice Quantum Institute, and Department of Chemistry and Physics, MS-100, Rice University, P.O. Box 1892, Houston, Texas 77251