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

2003/01/07 by H. Saarikoski, E. Räsänen, S. Siljamäki +4 · 5 citations
Physics and Astronomy · #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #Semiconductor Quantum Structures and Devices #cond-mat.mes-hall

paper · pdf · doi:10.1103/physrevb.67.205327

published as Phys. Rev. B 67, 205327 (2003) · 18 pages, 3 figures, 5 eps-figure files

arxiv created 2003/01/07 · openalex publication_date 2003/05/30 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/23

Abstract

We study a model quantum dot system in an external magnetic field by using both spin-density-functional theory and current-spin density-functional theory. The theories are used with local approximations for the spin-density and 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.

Cited by

• Conductance of a quantum point contact based on spin-density-functional theory
• Comparison of exact-exchange calculations for solids in current-spin-density- and spin-density-functional theory
• Semi‐local density functional for the exchange‐correlation energy of electrons in two dimensions
• Impurity effects in quantum dots: Toward quantitative modeling
• Rectangular quantum dots in high magnetic fields

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