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Stripes in the Ising Limit of Models for the Cuprates

G. B. Martins·C. Gazza·E. Dagotto
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Abstract

The hole-doped standard and extended t-J models on ladders with anisotropic Heisenberg interactions are studied computationally in the interval $0.0 \leq λ\leq 1.0$ ($λ=0$, Ising; $λ=1$, Heisenberg). It is shown that the approximately half-doped stripes recently discussed at $λ=1$ survive in the anisotropic case ($λ$$<$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 $0.0 \leq λ\leq 1.0$ suggests that this picture is valid up to the Heisenberg limit.

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G. B. Martins, C. Gazza, E. Dagotto. 2000-06-19. Stripes in the Ising Limit of Models for the Cuprates. https://doi.org/10.1103/physrevb.62.13926

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