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Article Dans Une Revue Physical Review Letters Année : 2012

Coexistence of long-range and algebraic correlations for short-range valence-bond wave functions in three dimensions

Résumé

We investigate nearest-neighbor valence-bond wave functions on bipartite three-dimensional lattices. By performing large-scale Monte Carlo simulations, we find that long-range magnetic order coexists with dipolar four-spin correlations on the cubic lattice, this latter feature being reminiscent of the Coulomb phase for classical dimers on the same lattice. Similar properties are found for the lower-coordination diamond lattice. While this suggests that the coexistence of magnetic order and dipolar four-spin correlations is generic for bipartite three-dimensional lattices, we show that simple generalizations of these wave functions can encode different ordering behaviors.

Dates et versions

hal-00739396 , version 1 (08-10-2012)

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Fabricio A. Albuquerque, Fabien Alet, Roderich Moessner. Coexistence of long-range and algebraic correlations for short-range valence-bond wave functions in three dimensions. Physical Review Letters, 2012, 109, pp.147204. ⟨10.1103/PhysRevLett.109.147204⟩. ⟨hal-00739396⟩
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