Counting Statistics of Parallel Al atomic wires
Abstract
We have studied how the lateral interaction affects the electric conductance, the second-order current correlation (shot noise), and the third-order one (skewness) of a pair of parallel Al atomic wires. The field operator of wave function is introduced to calculate the current-current correlations. The corresponding wave functions are self-consistently obtained by iteration according to the Lippmann-Schwinger First-principles calculation. The results show that when the distance between two wires is sufficiently small, the bonding interaction near the Fermi level will induce a spatial delocalization of electrons. This leads to an electric conduction value greater than the sum of two uncorrelated atomic wire, and a side-band peak is generated around the maximum conductance. This correlation can also be observed from the shot noise and the skewness. In addition, we found that the three-order Fano factor is negatively related to the conductance.
Keywords
Cite
@article{arxiv.1110.5963,
title = {Counting Statistics of Parallel Al atomic wires},
author = {Ying-Tsan Tang and Yu-Chang Chen},
journal= {arXiv preprint arXiv:1110.5963},
year = {2011}
}
Comments
5 figures