Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2002-06-05
Phys. Rev. B 66, 153313 (2002)
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
5 pages, incl 5 Figures and 2 Tables
Scientific paper
10.1103/PhysRevB.66.153313
Exact electronic properties of a system of four Coulomb-interacting two-dimensional electrons in a parabolic confinement are reported. We show that degenerate ground states of this system are characterized by qualitatively different internal electron-electron correlations, and that the formation of Wigner molecule in the strong-interaction regime is going on in essentially different ways in these ground states.
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