Fractionalization into merons in quantum dots

Fractionalization into merons in quantum dots

We study by exact diagonalization, in the lowest Landau level approximation, the Coulomb interaction problem of N=4 and N=6 quantum dots in the limit of zero Zeeman coupling. We find that meron excitations constitute the lowest lying states of the quantum dots. This is based on a mapping between the...

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Bibliographic Details
Published in:Physical review letters Vol. 98; no. 6; p. 066808
Main Authors: Petkovic, A., Milovanovic, M. V.
Format: Journal Article
Language:English
Published: United States American Physical Society 09-02-2007
Subjects:
Condensed Matter
Other
Physics
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Summary:We study by exact diagonalization, in the lowest Landau level approximation, the Coulomb interaction problem of N=4 and N=6 quantum dots in the limit of zero Zeeman coupling. We find that meron excitations constitute the lowest lying states of the quantum dots. This is based on a mapping between the excitations of the dot and states of the Haldane-Shastry spin chain.
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content type line 23
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.98.066808