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Re-entrant pinning of Wigner molecules in a magnetic field due to a Coulomb impurity
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| Abstract |
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| 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 a 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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| Language |
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English
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| Source (journal) |
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Europhysics letters. - Paris |
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| Publication |
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Paris : 2004
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| ISSN |
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0295-5075
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| Volume/pages |
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66:5(2004), p. 701-707
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| ISI |
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000223064900014
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| Full text (Publisher's DOI) |
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| Full text (open access) |
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