paper

Stripes and spin-incommensurabilities are favored by lattice anisotropies

arXiv:cond-mat/0108198 · doi:10.1103/PhysRevLett.87.167005

Abstract

Structural distortions in cuprate materials give a natural origin for anisotropies in electron properties. We study a modified one-band t-J model in which we allow for different hoppings and antiferromagnetic couplings in the two spatial directions ( and ). Incommensurate peaks in the spin structure factor show up only in the presence of a lattice anisotropy, whereas charge correlations, indicating enhanced fluctuations at incommensurate wave vectors, are almost unaffected with respect to the isotropic case.

accepted for publication on Physical Review Letters, one color figure

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