Comment on ``Quantum Suppression of Shot Noise in Atom-Size Metallic Contacts''

Abstract

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 $G_0=2e^2/h$, 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.

arXiv comment1 page, 1 figure, submitted to Phys. Rev. Lett

References in corpus (3)

• Quantum suppression of shot noise in atom-size metallic contacts
• Evidence for saturation of channel transmission from conductance fluctuations in atomic-size point contacts
• Cohesion and conductance of disordered metallic point contacts

Cited by in corpus (15)

• Shot Noise in Mesoscopic Conductors
• Quantum properties of atomic-sized conductors
• Experimental determination of conduction channels in atomic scale conductors based on shot noise measurements
• Surface Fluctuations and the Stability of Metal Nanowires
• Quantum Suppression of the Rayleigh Instability in Nanowires
• Interplay of Rayleigh and Peierls Instabilities in Metallic Nanowires
• The nature of the electrical conduction in ferromagnetic atomic-size contacts: insights from shot noise measurements and theoretical simulations
• On the Stability and Structural Dynamics of Metal Nanowires
• Metal Nanowires: Quantum Transport, Cohesion, and Stability
• Quantum flicker noise in atomic and molecular junctions
• Stability of Metal Nanowires at Ultrahigh Current Densities
• Electronic shell effects and the stability of alkali nanowires
• Current noise enhancement: channel mixing and possible nonequilibrium phonon backaction in atomic-scale Au junctions
• Discrete thinning dynamics in a continuum model of metallic nanowires
• Machine learning delta-T noise for temperature bias estimation