Effect of nonmagnetic impurities on stripes in high-Tc cuprates
arXiv:cond-mat/0012024 · doi:10.1016/S0921-4534(01)00201-5
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 \sqrt{18}x\sqrt{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.
3 pages including 2 figures. Proceedings for ISS2000 (Tokyo, October 2000). To be published in Physica C