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<p>The magnetization process of the <InlineEquation ID="IEq3"> <EquationSource Format="TEX">\(S=2\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mi>S</mi> <mo>=</mo> <mn>2</mn> </mrow> </math></EquationSource> </InlineEquation> antiferromagnetic chain with two competing anisotropies is investigated using the numerical diagonalization of finite-size clusters and some size scaling analyses. As a result, it is found that the system possibly exhibits the translational symmetry broken magnetization plateaus at 1/4 and 3/4 of the saturation magnetization, as well as at 1/2. The phase diagrams for the anisotropies at 1/4, 3/4 and 1/2 magnetizations are presented. In addition, the magnetization curves for several typical anisotropy parameters are obtained.</p>

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Magnetization Plateaus of the \(S=2\) Antiferromagnetic Chain with Competing Anisotropies

  • 期刊论文

  • 发表日期：

    2025年10月28日

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  • Tôru Sakai,
  • Tomoki Houda,
  • Tomohide Kawatsu,
  • Haruto Suzuki,
  • Ryoma Hasegawa,
  • Yuki Hamazaki,
  • Hiroki Nakano,
  • Kiyomi Okamoto

摘要

The magnetization process of the \(S=2\) S = 2 antiferromagnetic chain with two competing anisotropies is investigated using the numerical diagonalization of finite-size clusters and some size scaling analyses. As a result, it is found that the system possibly exhibits the translational symmetry broken magnetization plateaus at 1/4 and 3/4 of the saturation magnetization, as well as at 1/2. The phase diagrams for the anisotropies at 1/4, 3/4 and 1/2 magnetizations are presented. In addition, the magnetization curves for several typical anisotropy parameters are obtained.