Journal
PHYSICAL REVIEW B
Volume 90, Issue 14, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.90.144409
Keywords
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Funding
- Spanish MINECO [FIS2008-01236, SGR2009-1289, 43467, EP/L005026/1, EP/K029371/1, 618074]
- MCTI
- UFRN/MEC (Brazil)
- Engineering and Physical Sciences Research Council [EP/K029371/1, EP/L005026/1] Funding Source: researchfish
- ICREA Funding Source: Custom
- EPSRC [EP/K029371/1, EP/L005026/1] Funding Source: UKRI
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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.
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