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Magnetization plateau in S=3/2 antiferromagnetic Heisenberg chain with anisotropy

Toru Sakai·Minoru Takahashi
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Abstract

The magnetization process of the S=3/2 antiferromagnetic Heisenberg chain with the single-ion anisotropy D at T=0 is investigated by the exact diagonalization of finite clusters and finite-size scaling analyses. It is found that a magnetization plateau appears at m=1/2 for $D>D_c=0.93 \pm 0.01$. The phase transition with respect to D at D_c is revealed to be the Kosterlitz-Thouless-type. The magnetization curve of the infinite system is also presented for some values of D.

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Toru Sakai, Minoru Takahashi. 1997-10-30. Magnetization plateau in S=3/2 antiferromagnetic Heisenberg chain with anisotropy. https://doi.org/10.1103/physrevb.57.r3201

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