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EDP Sciences, The European Physical Journal B, 1(33), p. 87-101

DOI: 10.1140/epjb/e2003-00145-0

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Andreev-Lifshitz supersolid revisited for a few electrons on a square lattice II

Journal article published in 2003 by Zoltan Adam Nemeth, Z.�. N�meth, Z. Á. Németh, Jean-Louis Pichard
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This paper is available in a repository.

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Abstract

In this second paper, using N=3 polarized electrons (spinless fermions) interacting via a U/r Coulomb repulsion on a two dimensional L * L square lattice with periodic boundary conditions and nearest neighbor hopping, we show that a single unpaired fermion can co-exist with a correlated two particle Wigner molecule for intermediate values of the Coulomb energy to kinetic energy ratio r_s. ; Comment: 15 pages, 28 postscript figures