Testing of two-dimensional local approximations in the current-spin and spin-density-functional theories

Details Testing of two-dimensional local approximations in the current-spin and spin-density-functional theories Testing of two-dimensional local approximations in the current-spin and spin-density-functional theories

2003-01-07

arxiv.org/abs/cond-mat/0301062v1

Phys. Rev. B 67, 205327 (2003)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

18 pages, 3 figures, 5 eps-figure files

Scientific paper

10.1103/PhysRevB.67.205327

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.

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