Two ground-state modifications of quantum-dot beryllium

Mikhailov, S. A.

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Two ground-state modifications of quantum-dot beryllium

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Mikhailov, S. A.
Abteilung v. Klitzing, Former Departments, Max Planck Institute for Solid State Research, Max Planck Society;

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Mikhailov, S. A. (2002). Two ground-state modifications of quantum-dot beryllium. Physical Review B, 66(15): 153313.

Cite as: https://hdl.handle.net/21.11116/0000-000E-EA07-3

Abstract

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.