Abstract

We perform the numerically exact diagonalization study of the t– J model with nonmagnetic impurities to clarify the relation between Zn impurities and the stripes. By examining the hole–hole correlation function for a two-hole 18 × 18 cluster with a single impurity, we find that the impurity has a tendency to stabilize vertical charge stripes. This tendency is caused by the gain of the kinetic energy of holes moving along the stripes that are formed avoiding the impurity.

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