94 citations · 511 across the 15 of their papers we have counts for
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Magnetization-plateau state of the S=3/2 spin chain with single ion anisotropy
Atsuhiro Kitazawa, Kiyomi Okamoto
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 ma…
Breakdown of the magnetization plateau of the S=1/2 ferromagnetic-ferromagnetic-antiferromagnetic trimerized spin chain with anisotropy
Atsuhiro Kitazawa, Kiyomi Okamoto
We study the breakdown of the magnetization plateau at the magnetization M=M_{S}/3 (M_{S} is the saturation magnetization) of the S=1/2 anisotropic spin chain with ferromagnetic-fe…
Quantum Phase Transition of S=1/2 Trimerized XXZ Spin Chain in Magnetic Field
Kiyomi Okamoto, Atsuhiro Kitazawa
We study the magnetization plateau at a third of the saturation magnetization of the S=1/2 trimerized XXZ spin chain at T=0. The appearance of the plateau depends on the values of…
Spin-Gap Phases in Tomonaga-Luttinger Liquids
Masaaki Nakamura, Atsuhiro Kitazawa, Kiyohide Nomura
We give the details of the analysis for critical properties of spin-gap phases in one-dimensional lattice electron models. In the Tomonaga-Luttinger (TL) liquid theory, the spin-ga…