TY - JOUR
T1 - Density-functional theory of spin-polarized disordered quantum dots
AU - Hirose, Kenji
AU - Zhou, Fei
AU - Wingreen, Ned S.
PY - 2001/1/16
Y1 - 2001/1/16
N2 - Using density-functional theory, we investigate fluctuations of the ground-state energy of spin-polarized, disordered quantum dots in the metallic regime. To compare to experiment, we evaluate the distribution of addition energies and find a convolution of the Wigner-Dyson distribution, expected for noninteracting electrons, with a narrower Gaussian distribution. The width of the Gaussian is accurately given by the fluctuations in the screened Coulomb interaction between a pair of electrons at the Fermi energy.
AB - Using density-functional theory, we investigate fluctuations of the ground-state energy of spin-polarized, disordered quantum dots in the metallic regime. To compare to experiment, we evaluate the distribution of addition energies and find a convolution of the Wigner-Dyson distribution, expected for noninteracting electrons, with a narrower Gaussian distribution. The width of the Gaussian is accurately given by the fluctuations in the screened Coulomb interaction between a pair of electrons at the Fermi energy.
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U2 - 10.1103/PhysRevB.63.075301
DO - 10.1103/PhysRevB.63.075301
M3 - Article
AN - SCOPUS:0035102686
SN - 1098-0121
VL - 63
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 7
ER -