Berezinskii-Kosterlitz-Thouless Transition of Spin-1 XXZ Chains in a Staggered Magnetic Field

1997/10/16 by Masayoshi Tsukano, Kiyohide Nomura · 1 citation
Materials Science · Physics and Astronomy · #Organic and Molecular Conductors Research #Physics of Superconductivity and Magnetism #Theoretical and Computational Physics #cond-mat.stat-mech

paper · pdf · doi:10.1143/jpsj.67.302

4 pages, LaTex(JPSJstyle), 8 figures, to appear in J.Phys.Soc.Jpn

arxiv created 1997/10/16 · openalex publication_date 1998/01/15 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

Phase diagram of S=1 XXZ chain in a staggered magnetic field is obtained numerically. The Berezinskii-Kosterlitz-Thouless transition between the XY and the antiferromagnetic phases is studied by the level-spectroscopy. Moreover we find that there is no distinction between the Haldane and the antiferromagnetic phases, since the Gaussian critical line does not appear, in contrast to the S=1/2 case. It is expected that some hidden Z₂× Z₂ symmetry breaking happens not only in the Haldane phase but also in the antiferromagnetic one.

Citations

• Conformal invariance and universality in finite-size scaling
• The critical properties of the two-dimensional xy model

Cited by

• Low-energy properties of two-leg spin-1 antiferromagnetic ladders with commensurate external fields and their extensions