Effect of nonmagnetic impurities on stripes in high-Tc cuprates

2000/12/02 by T. Tohyama, M. Takahashi, S. Maekawa
Physics and Astronomy · #cond-mat.str-el #cond-mat.supr-con

paper · pdf · doi:10.1016/s0921-4534(01)00201-5

published as Physica C, 357-360 (2001) pp.93-95 · 3 pages including 2 figures. Proceedings for ISS2000 (Tokyo, October 2000). To be published in Physica C

arxiv created 2000/12/02 · arxiv updated 2009/11/30

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)x√(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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