Hydrodynamic relation in 2D Heisenberg antiferromagnet in a field

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dc.creatorChernyshev, A. L.
dc.creatorZhitomirsky, M. E.
dc.date2009-02-25
dc.date.accessioned2026-07-07T13:10:28Z
dc.date.available2026-07-07T13:10:28Z
dc.descriptionThe spin-stiffness ρ_s of a 2D Heisenberg antiferromagnet depends non-analytically on external magnetic field. We demonstrate that the hydrodynamic relation between ρ_s, the uniform susceptibility χ, and the spin-wave velocity $c$ is not violated by such a behavior because similar non-analytic terms from all three quantities mutually cancel out. In this work, explicit expressions for the field-dependent spin stiffness and for the magnon velocity of the 2D square lattice antiferromagnet are obtained by direct calculation to order 1/S and in the whole range of magnetic fields.
dc.description5*(1-ε) pages, 5 figures
dc.identifierhttps://arxiv.org/abs/0902.4455
dc.identifierhttp://arxiv.org/abs/0902.4455
dc.identifierPhys. Rev. B 79, 174402 (2009); another winner of the PRB beauty contest.
dc.identifierdoi:10.1103/PhysRevB.79.174402
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/229019
dc.subjectStrongly Correlated Electrons
dc.titleHydrodynamic relation in 2D Heisenberg antiferromagnet in a field
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