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

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

1997-10-30

arxiv.org/abs/cond-mat/9710327v1

Phys. Rev. B57 (1998) R3201

Physics

Condensed Matter

Statistical Mechanics

4 pages, Revtex, with 5 eps figures

Scientific paper

10.1103/PhysRevB.57.R3201

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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