Fractionalization into merons in quantum dots

Details Fractionalization into merons in quantum dots Fractionalization into merons in quantum dots

2006-11-05

arxiv.org/abs/cond-mat/0611116v1

PRL 98, 066808 (2007)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 5 figures

Scientific paper

We study by exact diagonalization, in the lowest Landau level approximation,
the Coulomb interaction problem of N = 4 and N = 6 quantum dot 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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