Observation of the e/3 Fractionally Charged Laughlin Quasiparticles
Condensed Matter
2009-10-30 v2
Abstract
The existence of fractional charges carrying the current is experimentally demonstrated. Using a 2-D electron system in high magnetic field, we measure the shot noise associated with tunneling in the fractional quantum Hall regime at Landau level filling factor 1/3. The noise gives a direct determination of the quasiparticle charge, which is found to be e*=e/3 as predicted by Laughlin. The existence of e/3 Laughlin quasiparticles is unambiguously confirmed by the shot noise to Johnson-Nyquist noise cross-over found for temperature e*V/2k.
Keywords
Cite
@article{arxiv.cond-mat/9706307,
title = {Observation of the e/3 Fractionally Charged Laughlin Quasiparticles},
author = {L. Saminadayar and D. C. Glattli and Y. Jin and B. Etienne},
journal= {arXiv preprint arXiv:cond-mat/9706307},
year = {2009}
}
Comments
4 pages, 4 figures, to appear in Phys. Rev. Lett. (accepted August 22)