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Journal Article

Magnetic order in lightly doped cuprates: Coherent versus incoherent hole quasiparticles and nonmagnetic impurities

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Kircán,  M.
Miscellaneous, Max Planck Institute for Solid State Research, Max Planck Society;

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Citation

Kircán, M., & Vojta, M. (2006). Magnetic order in lightly doped cuprates: Coherent versus incoherent hole quasiparticles and nonmagnetic impurities. Physical Review B, 73(1): 014516.


Cite as: https://hdl.handle.net/21.11116/0000-000E-DF00-7
Abstract
We investigate magnetic properties of lightly doped antiferromagnetic
Mott insulators in the presence of nonmagnetic impurities. Within the
framework of the t-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
La2-xSrxCuO4.