Fractionalization into Merons in Quantum Dots

A. Petković and M. V. Milovanović
Phys. Rev. Lett. 98, 066808 – Published 9 February 2007

Abstract

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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  • Received 26 January 2006

DOI:https://doi.org/10.1103/PhysRevLett.98.066808

©2007 American Physical Society

Authors & Affiliations

A. Petković1,2 and M. V. Milovanović1

  • 1Institute of Physics, P.O. Box 68, 11080 Belgrade, Serbia
  • 2Institut für Theoretische Physik, Universität zu Köln, 50937 Köln, Germany

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Issue

Vol. 98, Iss. 6 — 9 February 2007

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