Charge and spin dynamics in interacting quantum dots
Mesoscale and Nanoscale Physics
2010-05-03 v2
Abstract
The transient response of a quantum dot with strong Coulomb interaction to a fast change in the gate potential, as well as the stationary ac-response to a slow harmonic variation of the gate potential are computed by means of a real-time diagrammatic expansion in the tunnel-coupling strength. We find that after a fast switching, the relaxation of charge and spin are governed by a single time constant each, which differ from each other due to Coulomb repulsion. We compare the response to a step potential with the time extracted from the ac response.
Cite
@article{arxiv.1001.2664,
title = {Charge and spin dynamics in interacting quantum dots},
author = {Janine Splettstoesser and Michele Governale and Jürgen König and Markus Büttiker},
journal= {arXiv preprint arXiv:1001.2664},
year = {2010}
}
Comments
5 pages, 3 figures, published version