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Anomalous behavior of the magnetization process of the $$S$$ =1/2 kagome-lattice Heisenberg antiferromagnet at one-third height of the saturation

カゴメ格子ハイゼンベルグ反強磁性体の磁化3分の1における異常な振る舞い

中野 博生*; 坂井 徹

Nakano, Hiroki*; Sakai, Toru

$$S$$=1/2カゴメ格子反強磁性体の磁化過程について数値対角化により研究した。我々は42スピン系の完全な磁化曲線を計算することに成功した。その結果、磁化3分の1に現れる臨界的な振る舞いが、従来の二次元系の磁化プラトーとは異なることが明らかとなった。

The magnetization process of the $$S$$ =1/2 Heisenberg antiferromagnet on the kagome lattice is studied by the numerical diagonalization method. We successfully obtain a new result of the magnetization process of a 42-site cluster in the entire range. Our analysis clarifies that the critical behavior around one-third of the height of the saturation is different from the typical behavior of the well-known magnetization plateau in two-dimensional systems.

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パーセンタイル:24

分野:Physics, Multidisciplinary

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