Stripe Stability in the Extended t-J Model on Planes and Four-Leg Ladders

Details Stripe Stability in the Extended t-J Model on Planes and Four-Leg Ladders Stripe Stability in the Extended t-J Model on Planes and Four-Leg Ladders

1998-09-30

arxiv.org/abs/cond-mat/9809411v2

Phys. Rev. B 59, R11649-11652 (1999)

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 4 figures, revised version, to appear in Phys.Rev.B,Vol.59,1 May 1999, Rapid Commnu

Scientific paper

10.1103/PhysRevB.59.R11649

The tendencies to phase-separation and stripe formation of the t-J model on planes and four-leg ladders have been here reexamined including hole hopping terms t', t'' beyond nearest-neighbor sites. The motivation for this study is the growing evidence that such terms are needed for a quantitative description of the cuprates. Using a variety of computational techniques it is concluded that the stripe tendencies considerably weaken when experimentally realistic t'<0, t''>0 for hole-doped cuprates are considered. However, a small t'>0 actually enhances the stripe formation.

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