Effective Sublattice Magnetization and Neel Temperature in Quantum Antiferromagnets

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dc.creatorMarino, Eduardo C.
dc.creatorNeto, Marcello B. Silva
dc.date1999-12-08
dc.date2000-03-13
dc.date.accessioned2026-07-07T11:29:50Z
dc.date.available2026-07-07T11:29:50Z
dc.descriptionWe present an analytic expression for the finite temperature effective sublattice magnetization which would be detected by inelastic neutron scattering experiments performed on a two-dimensional square-lattice quantum Heisenberg antiferromagnets with short range Néel order. Our expression, which has no adjustable parameters, is able to reproduce both the qualitative behaviour of the phase diagram $M(T)xT$ and the experimental values of the Néel temperature $T_{N}$ for either doped YBa$_{2}$Cu$_{3}$O$_{6.15}$ and stoichiometric La$_{2}$CuO$_{4}$ compounds. Finally, we remark that by incorporating frustration and 3D effects as perturbations is sufficient to explain the deviation of the experimental data from our theoretical curves.
dc.description4 pages, RevTex, 3 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/9912143
dc.identifierhttp://arxiv.org/abs/cond-mat/9912143
dc.identifierPhys.Rev.B62:142,2000
dc.identifierdoi:10.1103/PhysRevB.62.142
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/196841
dc.subjectStrongly Correlated Electrons
dc.subjectSuperconductivity
dc.subjectHigh Energy Physics - Theory
dc.titleEffective Sublattice Magnetization and Neel Temperature in Quantum Antiferromagnets
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