In a recent letter (Phys.Rev.Lett. 82, 1526 (1999)), van den Brom and van Ruitenbeek found a pronounced suppression of the shot noise in atom-size gold contacts with conductances near integer multiples of G0=2e2/h, revealing unambiguously the quantized nature of the electronic transport. However, the ad hoc model they introduced to describe the contribution of partially-open conductance channels to the shot noise is unable to fit either the maxima or minima of their shot noise data. Here we point out that a model of quantum-confined electrons with disorder quantitatively reproduces their measurements.
@article{arxiv.cond-mat/9907425,
title = {Comment on ``Quantum Suppression of Shot Noise in Atom-Size Metallic Contacts''},
author = {J. Burki and C. A. Stafford},
journal= {arXiv preprint arXiv:cond-mat/9907425},
year = {2007}
}