Local spin polarization in underdoped cuprates with impurities
Strongly Correlated Electrons
2009-10-31 v1
Abstract
We present a theory of magnetic (Ni) and nonmagnetic (Zn) impurities substituted into planar Cu sites in the normal state of underdoped cuprates exhibiting a spin gap. Both types of impurities induce magnetic moments on neighboring Cu sites. In the case of Ni these moments partially screen the inherent impurity spin, resulting in an effective S=1/2 moment. The characteristic Kondo scale is found to have a power-law dependence on the coupling constant. We investigate the spatial shape of the impurity-induced spin density, taking into account the presence of short-ranged AF correlations, and calculate the ^{17}O NMR line broadening induced by impurity doping.
Keywords
Cite
@article{arxiv.cond-mat/9810032,
title = {Local spin polarization in underdoped cuprates with impurities},
author = {G. Khaliullin and R. Kilian and S. Krivenko and P. Fulde},
journal= {arXiv preprint arXiv:cond-mat/9810032},
year = {2009}
}
Comments
To appear in: Physica C, Proceedings of ACS '98