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

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}=0.387 the system is critical and the magnetization plateau does not appear. 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.

6 pages, 8 figures

References in corpus (3)

• Magnetization plateau in S=3/2 antiferromagnetic Heisenberg chain with anisotropy
• $SU(2)/Z_2$ symmetry of the BKT transition and twisted boundary conditio n
• Magnetization plateau and quantum phase transition of the S=1/2 trimerized XXZ spin chain

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