Magnetic response of nonmagnetic impurities in cuprates

Details Magnetic response of nonmagnetic impurities in cuprates Magnetic response of nonmagnetic impurities in cuprates

2004-06-04

arxiv.org/abs/cond-mat/0406117v1

Phys. Rev. Lett. 93, 207202 (2004)

Physics

Condensed Matter

Strongly Correlated Electrons

5 pages, 3 figures

Scientific paper

10.1103/PhysRevLett.93.207202

A theory of the local magnetic response of a nonmagnetic impurity in a doped antiferromagnet, as relevant to the normal state in cuprates, is presented. It is based on the assumption of the overdamped collective mode in the bulk system and on the evidence, that equal-time spin correlations are only weakly renormalized in the vicinity of the impurity. The theory relates the Kondo-like behavior of the local susceptibility to the anomalous temperature dependence of the bulk magnetic susceptibility, where the observed increase of the Kondo temperature with doping reflects the crossover to the Fermi liquid regime and the spatial distribution of the magnetization is given by bulk antiferromagnetic correlations.

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