Temperature dependent third cumulant of tunneling noise
Mesoscale and Nanoscale Physics
2007-05-23 v1
Abstract
Poisson statistics predicts that the shot noise in a tunnel junction has a temperature independent third cumulant e^2\I, determined solely by the mean current I. Experimental data, however, show a puzzling temperature dependence. We demonstrate theoretically that the third cumulant becomes strongly temperature dependent and may even change sign as a result of feedback from the electromagnetic environment. In the limit of a noninvasive (zero-impedance) measurement circuit in thermal equilibrium with the junction, we find that the third cumulant crosses over from e^2/I at low temperatures to -e^2/I at high temperatures.
Keywords
Cite
@article{arxiv.cond-mat/0301476,
title = {Temperature dependent third cumulant of tunneling noise},
author = {C. W. J. Beenakker and M. Kindermann and Yu. V. Nazarov},
journal= {arXiv preprint arXiv:cond-mat/0301476},
year = {2007}
}
Comments
4 pages including 2 figures