2014/02/28 by M. Moreno-Cardoner, Maria Moreno-Cardoner, Hélène Perrin +7 · 3 citations
Physics and Astronomy · #Advanced Condensed Matter Physics #Anisotropy #Antiferromagnetism #Condensed matter physics #Heisenberg model #Hexagonal lattice #Lattice (music) #Phase (matter) #Phase diagram #Physics #Physics of Superconductivity and Magnetism #Quantum mechanics #Spin (aerodynamics) #Supersolid #Theoretical and Computational Physics #cond-mat.other #cond-mat.quant-gas #cond-mat.stat-mech #cond-mat.str-el #quant-ph
paper · pdf · doi:10.1103/physrevb.90.144409
published as Phys. Rev. B 90, 144409 (2014) · 7 pages, 4 figures, RevTeX 4. The abstract and conclusions have been modified and the manuscript has been extended
arxiv created 2014/05/12 · openalex publication_date 2014/10/06 · arxiv updated 2015/06/18 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
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\ensuremath-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.