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| Title: | QUANTUM DOTS AND QUANTUM DOT LATTICES: CORRELATIONS IN SMALL QUANTAL SYSTEMS
Work supported by the Swedish Research Council (VR), the Swedish Foundation for Strategic Research (SSF) and the Academy of Finland. |
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| DOI No: | 10.1142/9789812701879_0016 | |
| Source: | CLUSTERS AND NANO-ASSEMBLIES (pp 143-150) | |
| Author(s): | M. BORGH
Deptartment of Mathematical Pysics, Lund Institute of Technology, Lund University, Sölvegatan 14A, Box 118, SE-221 00, Lund, Sweden M. TOREBLAD Deptartment of Mathematical Pysics, Lund Institute of Technology, Lund University, Sölvegatan 14A, Box 118, SE-221 00, Lund, Sweden S. ÅBERG Deptartment of Mathematical Pysics, Lund Institute of Technology, Lund University, Sölvegatan 14A, Box 118, SE-221 00, Lund, Sweden S.M. REIMANN Deptartment of Mathematical Pysics, Lund Institute of Technology, Lund University, Sölvegatan 14A, Box 118, SE-221 00, Lund, Sweden M. KOSKINEN Department of Physics, University of Jyväskylä, 40351 Jyväskylä, Finland M. MANNINEN Department of Physics, University of Jyväskylä, 40351 Jyväskylä, Finland |
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| Abstract: | Recently, Attaccalite et al. proposed a new expression for the exchange-correlation energy of the two-dimensional electron gas, based on quantum Monte Carlo calculations. We compare this functional with the established expression given by Tanatar and Ceperley for use in density functional calculations. As model systems serve a circular few-electron quantum dot and a square lattice of dots. For single dots, electronic structure calculations are performed using both energy functionals for the self-consistent solution of the Kohn-Sham equations. The results are compared with those of a numerical diagonalization of the many-body Hamiltonian. | |
| Full Text: | View full text in PDF format (617KB) | |
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