Multicritical points in the three-dimensional XXZ antiferromagnet with single-ion anisotropy

Abstract

The classical Heisenberg antiferromagnet with uniaxial exchange anisotropy, the XXZ model, and competing planar single-ion anisotropy in a magnetic field on a simple cubic lattice is studied with the help of extensive Monte Carlo simulations. The biconical (supersolid) phase, bordering the antiferromagnetic and spin-flop phases, is found to become thermally unstable well below the onset of the disordered, paramagnetic phase, leading to interesting multicritical points.

References in corpus (6)

• Spin Supersolid in Anisotropic Spin-One Heisenberg Chain
• Field theory of bi- and tetracritical points: Statics
• Spin-1 Heisenberg antiferromagnetic chain with exchange and single-ion anisotropies
• Uniaxially anisotropic antiferromagnets in a field on a square lattice
• Spin-supersolid phase in Heisenberg chains: a characterization via Matrix Product States with periodic boundary conditions
• Ground state and thermal transitions in Field Induced spin-Supersolid Phase

Cited by in corpus (6)

• Competing orders, competing anisotropies, and multicriticality: The case of Co-doped YbRh2Si2
• Spin supersolid phase in coupled alternating spin chains
• Critical and multicritical behavior in the Ising-Heisenberg universality class
• Mixed-spin system with supersolid phases: Magnetocaloric effect and thermal properties
• The puzzle of bicriticality in the XXZ antiferromagnet
• Anisotropic XY antiferromagnets in a field