Dislocations in the melting of two-dimensional electron crystals
Chui, S. -T.
Journal of Physics: Condensed Matter
Institute of Physics Publishing Ltd.
L485 - L490
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We study the defect structure of quantum Monte Carlo simulations of a two-dimensional electron gas in the crystalline phase. A finite density of dislocation pairs exists even before the melting takes place. The dislocation pair density in the solid increases gradually as the electron gas parameter r s is increased and is much higher than that in the related problem of flux-line lattice melting.