Phys. Rev. B 50, 12927–12934 (1994)Estimation of the doping dependence of the Néel temperature in high-Tc copper oxidesReceived 16 March 1994; published in the issue dated 1 November 1994 Using the polaron model as an approximation of the t-J model, we have computed in the two-time Green’s-function formalism the spin-wave spectrum and the staggered magnetization at nonzero temperature near the transition to the disordered phase. The incoherent part of the charge spectrum mainly contributes and leads to an estimate of the doping-dependent Néel temperature which turns out to be in fairly good agreement with experiment for high-Tc copper oxides. © 1994 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevB.50.12927
DOI:
10.1103/PhysRevB.50.12927
PACS:
71.27.+a
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