Photo-assisted shot noise in Coulomb interacting systems
Mesoscale and Nanoscale Physics
2007-05-23 v1
Abstract
We consider the fluctuations of the electrical current (shot noise) in the presence of a voltage time-modulation. For a non-interacting metal, it is known that the derivative of the photo-assisted noise has a staircase behavior. In the presence of Coulomb interactions, we show that the photo-assisted noise presents a more complex profile, in particular for the two following systems: 1) a two-dimensional electron gas in the fractional quantum Hall regime for which we have obtained evenly spaced singularities in the noise derivative, with a spacing related to the filling factor and, 2) a carbon nanotube for which a smoothed staircase in the noise derivative is obtained.
Keywords
Cite
@article{arxiv.0704.1427,
title = {Photo-assisted shot noise in Coulomb interacting systems},
author = {A. Crepieux and M. Guigou and A. Popoff and P. Devillard and T. Martin},
journal= {arXiv preprint arXiv:0704.1427},
year = {2007}
}
Comments
Proceedings of the 6th Rencontres du Vietnam, Hanoi (2006)