Spin Ensemble Density Functional Theory for Inhomogeneous Quantum Hall Systems
Mesoscale and Nanoscale Physics
2009-10-30 v1
Abstract
We have developed an ensemble density functional theory which includes spin degrees of freedom for nonuniform quantum Hall systems. We have applied this theory using a local-spin-density approximation to study the edge reconstruction of parabolically confined quantum dots. For a Zeeman splitting below a certain critical value, the edge of completely polarized maximum density droplet reconstructs into a spin-unpolarized structure. For larger Zeeman splittings, the edge remains polarized and develops an exchange hole.
Cite
@article{arxiv.cond-mat/9701079,
title = {Spin Ensemble Density Functional Theory for Inhomogeneous Quantum Hall Systems},
author = {M. I. Lubin and O. Heinonen and M. D. Johnson},
journal= {arXiv preprint arXiv:cond-mat/9701079},
year = {2009}
}
Comments
16 pages RevTex, 8 encapsulated Postscript figures. Submitted to Phys. Rev. B