d_{x^2-y^2} Pair Domain Walls

Details d_{x^2-y^2} Pair Domain Walls d_{x^2-y^2} Pair Domain Walls

1996-10-13

arxiv.org/abs/cond-mat/9610104v1

Physics

Condensed Matter

Superconductivity

11 pages, with 3 Postscript figures

Scientific paper

Using the density matrix renormalization group, we study domain wall structures in the t-J model at a hole doping of x=1/8. We find that the domain walls are composed of d_{x^2-y^2} pairs and that the regions between the domain walls have antiferromagnetic correlations that are pi phase shifted across a domain wall. At x=1/8, the hole filling corresponds to one hole per two domain wall unit cells. When the pairs in a domain wall are pinned by an external field, the d_{x^2-y^2} pairing response is suppressed, but when the pinning is weakened, d_{x^2-y^2} pair-field correlations can develop.

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