Physics – Condensed Matter – Superconductivity
Scientific paper
2005-08-16
Phys. Rev. B 73, 014516 (2006)
Physics
Condensed Matter
Superconductivity
11 pages, 7 figs, (v2) final version as published
Scientific paper
10.1103/PhysRevB.73.014516
We investigate magnetic properties of lightly doped antiferromagnetic Mott insulators in the presence of non-magnetic impurities. Within the framework of the t-J model we calculate the doping dependence of the antiferromagnetic order parameter using the self-consistent diagrammatic techniques. We show that in the presence of non-magnetic impurities the antiferromagnetic order is more robust against hole doping in comparison with the impurity-free host, implying that magnetic order can re-appear upon Zn doping into lightly hole-doped cuprates. We argue that this is primarily due to the loss of coherence and reduced mobility of the hole quasiparticles caused by impurity scattering. These results are consistent with experimental data on Zn-doped LaSrCuO.
Kircan Marijana
Vojta Matthias
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