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Phys. Rev. Lett. 83, 3270–3273 (1999)

Quantum Dots in Magnetic Fields: Phase Diagram and Broken Symmetry at the Maximum-Density-Droplet Edge

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S. M. Reimann, M. Koskinen, and M. Manninen
Department of Physics, University of Jyväskylä, FIN-40351 Jyväskylä, Finland

B. R. Mottelson
NORDITA, Blegdamsvej 17, DK-2100 Copenhagen, Denmark

Received 15 December 1998; published in the issue dated 18 October 1999

Quantum dots in magnetic fields are studied within the current spin-density-functional formalism avoiding any spatial symmetry restrictions of the solutions. We find that the maximum-density droplet reconstructs into states with broken internal symmetry: The Chamon-Wen edge coexists with a modulation of the charge density along the edge. The phase boundaries between the polarization transition, the maximum-density droplet, and its reconstruction are in agreement with recent experimental results.

© 1999 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.83.3270
DOI:
10.1103/PhysRevLett.83.3270
PACS:
73.20.Dx, 73.40.Hm, 85.30.Vw