Diagrammatic real-time approach to adiabatic pumping through metallic single-electron devices
Mesoscale and Nanoscale Physics
2009-06-05 v2
Abstract
We present a real-time diagrammatic formalism to study adiabatic pumping in chains of tunnel-coupled metallic islands. This approach is based on an expansion to linear order in the frequency of the time-dependent parameters and on a systematic perturbation expansion in the tunnel-coupling strength. We apply our formalism to a single-island and a double-island system. In the single-island setup, we find that the first-order contribution in the tunnel-coupling strength is purely due to the renormalization of the charging-energy gap. In the double-island system, we investigate the transition between weak and strong pumping.
Keywords
Cite
@article{arxiv.0903.2709,
title = {Diagrammatic real-time approach to adiabatic pumping through metallic single-electron devices},
author = {Nina Winkler and Michele Governale and Jürgen König},
journal= {arXiv preprint arXiv:0903.2709},
year = {2009}
}
Comments
published version, 13 pages, 11 figures