Abstract
Abstract We perform numerical studies of strongly interacting electrons on a two-dimensional lattice in the Hartree-Fock approximation. The results clearly show significant ordering of the positions of the electrons with decreasing temperature signaling the formation of a two-dimensional Wigner crystal. The degree of order as a function of temperature is in a good qualitative agreement with experimental results for the threshold voltage at which the depinning of the crystal occurs. In the limit of very strong electron-electron interactions, the ordering of the electrons becomes almost perfect.
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