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

Abstract

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.

10 pages, 7 figures

References in corpus (2)

• Analysis of the Knight shift data on Li and Zn substituted YBCO
• Anomalous Temperature Dependence of Spin Susceptibility around a Nonmagnetic Impurity in High-Tc Cuprate Superconductors

Cited by in corpus (4)

• Defects in correlated metals and superconductors
• Antiferromagnetic correlations and impurity broadening of NMR linewidths in cuprate superconductors
• Universal alternating order around impurities in antiferromagnets
• Knight shifts around vacancies in the 2D Heisenberg model