Quantum Monte Carlo study of a nonmagnetic impurity in the two-dimensional Hubbard model

Details Quantum Monte Carlo study of a nonmagnetic impurity in the two-dimensional Hubbard model Quantum Monte Carlo study of a nonmagnetic impurity in the two-dimensional Hubbard model

2003-08-05

arxiv.org/abs/cond-mat/0308074v1

Physics

Condensed Matter

Strongly Correlated Electrons

10 pages, 7 figures

Scientific paper

10.1103/PhysRevB.68.235103

In order to investigate the effects of nonmagnetic impurities in strongly correlated systems, Quantum Monte Carlo (QMC) simulations have been carried out for the doped two-dimensional Hubbard model with one nonmagnetic impurity. Using a bare impurity potential which is onsite and attractive, magnetic and single-particle properties have been calculated. The QMC results show that giant oscillations develop in the Knight shift response around the impurity site due to the short-range antiferromagnetic correlations. These results are useful for interpreting the NMR data on Li and Zn substituted layered cuprates.

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