Case study of the uniaxial anisotropic spin-1 bilinear-biquadratic Heisenberg model on a triangular lattice

TitleCase study of the uniaxial anisotropic spin-1 bilinear-biquadratic Heisenberg model on a triangular lattice
Publication TypeJournal Article
Year of Publication2014
AuthorsMoreno-Cardoner, M, Perrin, H, Paganelli, S, De Chiara, G, Sanpera, A
JournalPhysical Review B
Volume90
Date Published10/2014
ISSN1550-235X
Abstract

We study the spin-1 model on a triangular lattice in the presence of a uniaxial anisotropy field using a cluster mean-field (CMF) approach. The interplay among antiferromagnetic exchange, lattice geometry, and anisotropy forces Gutzwiller mean-field approaches to fail in a certain region of the phase diagram. There, the CMF method yields two supersolid phases compatible with those present in the spin−1/2 XXZ model onto which the spin-1 system maps. Between these two supersolid phases, the three-sublattice order is broken and the results of the CMF approach depend heavily on the geometry and size of the cluster. We discuss the possible presence of a spin liquid in this region.

DOI10.1103/PhysRevB.90.144409
Short TitlePhys. Rev. B
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