Two-dimensional anisotropic Heisenberg antiferromagnet in a magnetic field

2005/06/02 by M. Holtschneider, W. Selke, R. Leidl · 4 citations
Physics and Astronomy · #Advanced Condensed Matter Physics #Physics of Superconductivity and Magnetism #Theoretical and Computational Physics #cond-mat.stat-mech

paper · pdf · doi:10.1103/physrevb.72.064443

published as Phys. Rev. B 72, 064443 (2005) · 8 pages, 9 figures

arxiv created 2005/06/02 · openalex publication_date 2005/08/22 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

The classical, square lattice, uniaxially anisotropic Heisenberg antiferromagnet in a magnetic field parallel to the easy axis is studied using Monte Carlo techniques. The model displays a long-range ordered antiferromagnetic, an algebraically ordered spin-flop, and a paramagnetic phase. The simulations indicate that a narrow disordered phase intervenes between the ordered phases down to quite low temperatures. Results are compared to previous, partially conflicting findings on related classical models as well as the quantum variant with spin S=1∕2.

Citations

• Ordering, metastability and phase transitions in two-dimensional systems
• Instability of Antiferromagnetic Magnons in Strong Fields

Cited by

• Two-dimensional Heisenberg antiferromagnet in a transverse field
• The critical Binder cumulant for isotropic Ising models on square and triangular lattices
• Green’s function theory for spin-12ferromagnets with an easy-plane exchange anisotropy
• Biconical structures in two-dimensional anisotropic Heisenberg antiferromagnets