Spin-dependent Quantum Interference in Single-Wall Carbon Nanotubes with Ferromagnetic Contacts
Mesoscale and Nanoscale Physics
2007-05-23 v2
Abstract
We report the experimental observation of spin-induced magnetoresistance in single-wall carbon nanotubes contacted with high-transparency ferromagnetic electrodes. In the linear regime the spin-induced magnetoresistance oscillates with gate voltage in quantitative agreement with calculations based on a Landauer-Buttiker model for independent electrons. Consistent with this interpretation, we find evidence for bias-induced oscillation in the spin-induced magnetoresistance signal on the scale of the level spacing in the nanotube. At higher bias, the spin-induced magnetoresistance disappears because of a sharp decrease in the effective spin-polarization injected from the ferromagnetic electrodes.
Cite
@article{arxiv.cond-mat/0512505,
title = {Spin-dependent Quantum Interference in Single-Wall Carbon Nanotubes with Ferromagnetic Contacts},
author = {H. T. Man and I. J. W. Wever and A. F. Morpurgo},
journal= {arXiv preprint arXiv:cond-mat/0512505},
year = {2007}
}
Comments
Replaced with published version