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Exotic magnetism of the quantum spin nanotubes

量子スピンナノチューブのエキゾティックな磁性

坂井 徹; 岡本 清美*

Sakai, Toru; Okamoto, Kiyomi*

S=1/2量子スピンナノチューブの磁性について、数値対角化と現象論的繰り込みにより研究した。その結果、異方性について、ギャップ相とギャップレス相の間の量子相転移が起きることがわかった。

The magnetism of the S=1/2 quantum spin nanotube is investigated by the numerical diagonalization and phenomenological renormalization. As a result, it was found that a novel quantum phase transition occurs between the gapped and gapless phases, with respect to the anisotropy.

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