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

H. Saarikoski·E. Räsänen·S. Siljamäki·A. Harju·M. J. Puska·R. M. Nieminen
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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.

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H. Saarikoski, E. Räsänen, S. Siljamäki, A. Harju, M. J. Puska, R. M. Nieminen. 2003-01-07. Testing of two-dimensional local approximations in the current-spin and spin-density-functional theories. https://doi.org/10.1103/physrevb.67.205327

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