Stripes in the Ising Limit of Models for the Cuprates

Details Stripes in the Ising Limit of Models for the Cuprates Stripes in the Ising Limit of Models for the Cuprates

2000-06-19

arxiv.org/abs/cond-mat/0006286v1

Phys Rev B 62, 13926 (2000)

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, Revtex, 5 figures, submitted to PRB as Rapid Comm

Scientific paper

The hole-doped standard and extended t-J models on ladders with anisotropic Heisenberg interactions are studied computationally in the interval $0.0 \leq \lambda \leq 1.0$ ($\lambda=0$, Ising; $\lambda=1$, Heisenberg). It is shown that the approximately half-doped stripes recently discussed at $\lambda=1$ survive in the anisotropic case ($\lambda$$<$1.0), particularly in the "extended" model. Due to the absence of spin fluctuations in the Ising limit and working in the rung basis, a simple picture emerges in which the stripe structure can be mostly constructed from the solution of the t-J model on chains. A comparison of results in the range $0.0 \leq \lambda \leq 1.0$ suggests that this picture is valid up to the Heisenberg limit.

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