Coulomb blockade in two island systems with highly conductive junctions
Mesoscale and Nanoscale Physics
2009-11-10 v1
Abstract
We report measurements on single-electron pumps, consisting of two metallic islands formed by three tunnel junctions in series. We focus on the linear-response conductance as a function of gate voltage and temperature of three samples with varying system parameters. In all cases, strong quantum fluctuation phenomena are observed by a log(k_B T/(2 E_co)) reduction of the maximal conductance, where E_co measures the coupling strength between the islands. The samples display a rich phenomenology, culminating in a non-monotonic behavior of the maximal conductance as a function of temperature.
Keywords
Cite
@article{arxiv.cond-mat/0401391,
title = {Coulomb blockade in two island systems with highly conductive junctions},
author = {B. Limbach and P. vom Stein and C. Wallisser and R. Schaefer},
journal= {arXiv preprint arXiv:cond-mat/0401391},
year = {2009}
}