Magnetic susceptibility anisotropies in a two-dimensional quantum Heisenberg antiferromagnet with Dzyaloshinskii-Moriya interactions

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dc.creatorNeto, M. B. Silva
dc.creatorBenfatto, L.
dc.creatorJuricic, V.
dc.creatorSmith, C. Morais
dc.date2005-02-24
dc.date2006-01-24
dc.date.accessioned2026-07-07T10:28:03Z
dc.date.available2026-07-07T10:28:03Z
dc.descriptionThe magnetic and thermodynamic properties of the two-dimensional quantum Heisenberg antiferromagnet that incorporates both a Dzyaloshinskii-Moriya and pseudo-dipolar interactions are studied within the framework of a generalized nonlinear sigma model (NLSM). We calculate the static uniform susceptibility and sublattice magnetization as a function of temperature and we show that: i) the magnetic-response is anisotropic and differs qualitatively from the expected behavior of a conventional easy-axis QHAF; ii) the Neel second-order phase transition becomes a crossover, for a magnetic field B perpendicular to the CuO(2) layers. We provide a simple and clear explanation for all the recently reported unusual magnetic anisotropies in the low-field susceptibility of La(2)CuO(4), L. N. Lavrov et al., Phys. Rev. Lett. 87, 017007 (2001), and we demonstrate explicitly why La(2)CuO(4) can not be classified as an ordinary easy-axis antiferromagnet.
dc.description6 pages, 3 figures, Revtex4, accepted for publication in Phys. Rev. B
dc.identifierhttps://arxiv.org/abs/cond-mat/0502588
dc.identifierhttp://arxiv.org/abs/cond-mat/0502588
dc.identifierPhys.Rev.B73:045132,2006
dc.identifierdoi:10.1103/PhysRevB.73.045132
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/177319
dc.subjectStrongly Correlated Electrons
dc.subjectHigh Energy Physics - Phenomenology
dc.titleMagnetic susceptibility anisotropies in a two-dimensional quantum Heisenberg antiferromagnet with Dzyaloshinskii-Moriya interactions
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