dc.contributor.author | Ferconi, Maurizio, 1964- | eng |
dc.contributor.author | Vignale, Giovanni, 1957- | eng |
dc.date.issued | 1997 | eng |
dc.description | URL:http://link.aps.org/doi/10.1103/PhysRevB.56.12108
DOI:10.1103/PhysRevB.56.12108 | eng |
dc.description.abstract | We present a density-functional theory (DFT) approach to the study of the phase diagram of the maximum-density droplet (MDD) in two-dimensional quantum dots in a magnetic field. Within the lowest Landau level (LLL) approximation, analytical expressions are derived for the values of the parameters N (number of electrons) and B (magnetic field) at which the transition from the MDD to a “reconstructed” phase takes place. The results are then compared with those of full Kohn-Sham calculations, giving thus information about both correlation and Landau level mixing effects. Our results are also contrasted with those of Hartree-Fock (HF) calculations, showing that DFT predicts a phase diagram, which is in better agreement with the experimental results and the result of exact diagonalizations in the LLL than the HF calculations. | eng |
dc.description.sponsorship | M.F. acknowledges financial support from ONR under Grant No. 00014-96-1-1042. G.V. acknowledges financial support from NSF under Grant No. DMR-9403908. | eng |
dc.identifier.citation | Phys. Rev. B 56, 12108-12111 (1997) | eng |
dc.identifier.issn | 1098-0121 | eng |
dc.identifier.uri | http://hdl.handle.net/10355/7944 | eng |
dc.language | English | eng |
dc.publisher | American Physical Society | eng |
dc.relation.ispartofcollection | University of Missouri--Columbia. College of Arts and Sciences. Department of Physics and Astronomy. Physics and Astronomy publications | eng |
dc.subject.lcsh | Density functionals | eng |
dc.subject.lcsh | Density | eng |
dc.subject.lcsh | Approximation theory | eng |
dc.subject.lcsh | Conjugate gradient theory | eng |
dc.title | Density-functional theory of the phase diagram of maximum-density droplets in two-dimensional quantum dots in a magnetic field | eng |
dc.type | Article | eng |