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Magnetization-plateau state of the S=3/2 spin chain with single ion anisotropy

Atsuhiro Kitazawa·Kiyomi Okamoto
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Abstract

We reexamine the numerical study of the magnetized state of the S=3/2 spin chain with single ion anisotropy D(> 0) for the magnetization M=M_{S}/3, where M_{S} is the saturation magnetization. We find at this magnetization that for D D_{c1}, the parameter region is divided into two parts D_{c1} < D < D_{c2}=0.943 and D_{c2} < D. In each region, the system is gapful and the M=M_{S}/3 magnetization plateau appears in the magnetization process. From our numerical calculation, the intermediate region D_{c1} < D < D_{c2} should be characterized by a magnetized valence-bond-solid state.

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Atsuhiro Kitazawa, Kiyomi Okamoto. 1999-11-23. Magnetization-plateau state of the S=3/2 spin chain with single ion anisotropy. https://doi.org/10.1103/physrevb.62.940

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