Tunable Kondo physics in a carbon nanotube double quantum dot
Mesoscale and Nanoscale Physics
2012-10-16 v1 Strongly Correlated Electrons
Abstract
We investigate a tunable two-impurity Kondo system in a strongly correlated carbon nanotube double quantum dot, accessing the full range of charge regimes. In the regime where both dots contain an unpaired electron, the system approaches the two-impurity Kondo model. At zero magnetic field the interdot coupling disrupts the Kondo physics and a local singlet state arises, but we are able to tune the crossover to a Kondo screened phase by application of a magnetic field. All results show good agreement with a numerical renormalization group study of the device.
Cite
@article{arxiv.1209.3735,
title = {Tunable Kondo physics in a carbon nanotube double quantum dot},
author = {S. J. Chorley and M. R. Galpin and F. W. Jayatilaka and C. G. Smith and D. E. Logan and M. R. Buitelaar},
journal= {arXiv preprint arXiv:1209.3735},
year = {2012}
}