2005/08/31 by Marijana Kircan, Marijana Kirćan, Matthias Vojta · 8 citations
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Business #Condensed matter physics #Cuprate #Doping #Impurity #Magnetic and transport properties of perovskites and related materials #Materials science #Order (exchange) #Physics #Physics of Superconductivity and Magnetism #Quantum mechanics #Quasiparticle #Superconductivity #cond-mat.str-el #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevb.73.014516
published in Physical Review B 73(1) (American Physical Society) · 11 pages, 7 figs, (v2) final version as published
openalex publication_date 2006/01/19 · arxiv created 2006/01/20 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We investigate magnetic properties of lightly doped antiferromagnetic Mott insulators in the presence of nonmagnetic impurities. Within the framework of the t\text\ensuremath-J model we calculate the doping dependence of the antiferromagnetic order parameter using self-consistent diagrammatic techniques. We show that in the presence of nonmagnetic impurities the antiferromagnetic order is more robust against hole doping in comparison with the impurity-free host, implying that magnetic order can reappear 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 La_2\ensuremath-xSrxCuO4.