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

2012/11/05 by W. Selke, Walter Selke
Physics and Astronomy · #Advanced Condensed Matter Physics #Anisotropy #Antiferromagnetism #Condensed matter physics #Ion #Lattice (music) #Multicritical point #Paramagnetism #Phase (matter) #Phase diagram #Physics #Physics of Superconductivity and Magnetism #Planar #Quantum mechanics #Supersolid #Theoretical and Computational Physics #cond-mat.stat-mech

paper · pdf · doi:10.1103/physreve.87.014101

published as Phys. Rev. E 87, 014101 (2013)

arxiv created 2012/11/05 · openalex publication_date 2013/01/03 · arxiv updated 2015/06/12 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

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.

Citations

• Multicritical phenomena inO(n1)⊕O(n2)-symmetric theories
• Eliminating leading corrections to scaling in the three-dimensionalO(N)-symmetric ϕ4model:N= 3 and 4
• Ground state and thermal transitions in field-induced spin-supersolid phase
• Spin-supersolid phase in Heisenberg chains: A characterization via matrix product states with periodic boundary conditions