Testing of two-dimensional local approximations in the current-spin and spin-density-functional theories
Mesoscale and Nanoscale Physics
2007-05-23 v1
Abstract
We study a model quantum dot system in an external magnetic field by using both the spin-density-functional theory and the current-spin-density-functional theory. The theories are used with local approximations for the spin-density and the vorticity. The reliabilities of different parametrizations for the exchange-correlation functionals are tested by comparing the ensuing energetics with quantum Monte Carlo results. The limit where the vorticity dependence should be used in the exchange-correlation functionals is discussed.
Keywords
Cite
@article{arxiv.cond-mat/0301062,
title = {Testing of two-dimensional local approximations in the current-spin and spin-density-functional theories},
author = {H. Saarikoski and E. Räsänen and S. Siljamäki and A. Harju and M. J. Puska and R. M. Nieminen},
journal= {arXiv preprint arXiv:cond-mat/0301062},
year = {2007}
}
Comments
18 pages, 3 figures, 5 eps-figure files