Various spin-polarization states beyond the maximum-density droplet: a quantum Monte Carlo study
Mesoscale and Nanoscale Physics
2015-06-24 v1
Abstract
Using variational quantum Monte Carlo method, the effect of Landau-level mixing on the lowest-energy--state diagram of small quantum dots is studied in the magnetic field range where the density of magnetic flux quanta just exceeds the density of electrons. An accurate analytical many-body wave function is constructed for various angular momentum and spin states in the lowest Landau level, and Landau-level mixing is then introduced using a Jastrow factor. The effect of higher Landau levels is shown to be significant; the transition lines are shifted considerably towards higher values of magnetic field and certain lowest-energy states vanish altogether.
Cite
@article{arxiv.cond-mat/0112243,
title = {Various spin-polarization states beyond the maximum-density droplet: a quantum Monte Carlo study},
author = {S. Siljamaki and A. Harju and R. M. Nieminen and V. A. Sverdlov and P. Hyvonen},
journal= {arXiv preprint arXiv:cond-mat/0112243},
year = {2015}
}
Comments
4 pages, 2 figures. Submitted to Phys. Rev. B