Wigner islands with electrons over helium

We present here the first experimental study of Wigner islands formed by electrons floating over helium. Electrons are trapped electrostatically in a mesoscopic structure covered with a helium film, behaving as a quantum dot. By removing electrons one by one, we are able to find the addition spectru...

Full description

Saved in:
Bibliographic Details
Published in:arXiv.org 2008-07
Main Authors: Rousseau, E, Ponarin, D, Hristakos, L, Varoquaux, E, Avenel, O, Yu Mukharsky
Format: Article
Language:English
Subjects:
Computer simulation
Electrons
Floating structures
Helium
Helium film
Islands
Monte Carlo simulation
Quantum dots
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We present here the first experimental study of Wigner islands formed by electrons floating over helium. Electrons are trapped electrostatically in a mesoscopic structure covered with a helium film, behaving as a quantum dot. By removing electrons one by one, we are able to find the addition spectrum, i.e. the energy required to add (or extract) one electron from the trap with occupation number \(N\). Experimental addition spectra are compared with Monte Carlo simulations for the actual trap geometry, confirming the ordered state of electrons over helium in the island.
ISSN:2331-8422
DOI:10.48550/arxiv.0807.0955