Importance of In-Plane Anisotropy in the Quasi Two-Dimensional Antiferromagnet BaNi$_{2}$V$_{2}$O$_{8}$

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dc.creatorKnafo, W.
dc.creatorMeingast, C.
dc.creatorGrube, K.
dc.creatorDrobnik, S.
dc.creatorPopovich, P.
dc.creatorSchweiss, P.
dc.creatorAdelmann, P.
dc.creatorWolf, Th.
dc.creatorLöhneysen, H. V.
dc.date2006-12-14
dc.date2007-09-28
dc.date.accessioned2026-07-07T08:32:40Z
dc.date.available2026-07-07T08:32:40Z
dc.descriptionThe phase diagram of the quasi two-dimensional antiferromagnet BaNi$_{2}$V$_{2}$O$_{8}$ is studied by specific heat, thermal expansion, magnetostriction, and magnetization for magnetic fields applied perpendicular to $\mathbf{c}$. At $μ_0H^{*}\simeq1.5$ T, a crossover to a high-field state, where $T_N(H)$ increases linearly, arises from a competition of intrinsic and field-induced in-plane anisotropies. The pressure dependences of $T_N$ and $H^{*}$ are interpreted using the picture of a pressure-induced in-plane anisotropy. Even at zero field and ambient pressure, in-plane anisotropy cannot be neglected, which implies deviations from pure Berezinskii-Kosterlitz-Thouless behavior.
dc.description4 pages, 4 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0612357
dc.identifierhttp://arxiv.org/abs/cond-mat/0612357
dc.identifierPhys. Rev. Lett. 99, 137206 (2007)
dc.identifierdoi:10.1103/PhysRevLett.99.137206
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/138868
dc.subjectStrongly Correlated Electrons
dc.titleImportance of In-Plane Anisotropy in the Quasi Two-Dimensional Antiferromagnet BaNi$_{2}$V$_{2}$O$_{8}$
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