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Re-entrant pinning of Wigner molecules in a magnetic field due to a Coulomb impurity

B. Szafran·F. M. Peeters
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Abstract

Pinning of magnetic-field induced Wigner molecules (WMs) confined in parabolic two-dimensional quantum dots by a charged defect is studied by an exact diagonalization approach. We found a re-entrant pinning of the WMs as function of the magnetic field, a magnetic field induced re-orientation of the WMs and a qualitatively different pinning behaviour in the presence of a positive and negative Coulomb impurity.

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B. Szafran, F. M. Peeters. 2004-05-05. Re-entrant pinning of Wigner molecules in a magnetic field due to a Coulomb impurity. https://doi.org/10.1209/epl%2Fi2003-10250-8

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