Title | Case study of the uniaxial anisotropic spin-1 bilinear-biquadratic Heisenberg model on a triangular lattice |
Publication Type | Journal Article |
Year of Publication | 2014 |
Authors | Moreno-Cardoner, M, Perrin, H, Paganelli, S, De Chiara, G, Sanpera, A |
Journal | Physical Review B |
Volume | 90 |
Date Published | 10/2014 |
ISSN | 1550-235X |
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. |
DOI | 10.1103/PhysRevB.90.144409 |
Short Title | Phys. Rev. B |
