Spin-chirality separation and S3-symmetry breakings in the magnetization plateau of the quantum spin tube
Spin-chirality separation and S3-symmetry breakings in the magnetization plateau of the quantum spin tube
复制标题
量子自旋管磁化平台中的自旋手性分离和 S3 对称性破缺
DOI：
10.1103/physrevb.85.054416
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
and Chigak. Itoi
中科院分区：
文献类型：
--
作者：
Kouichi Okunishi;Masahiro Sato;Toru Sakai;Kiyomi Okamoto;and Chigak. Itoi
我们研究了三臂自旋管在强横档耦合区域的磁化平台态，其中对称性破缺和低能手性自由度起着关键作用。在有效手性模型和密度矩阵重整化群的基础上，我们阐明，随着支链耦合的增加，无间隙非磁激发的手性液体、自旋不平衡相和矢量-自旋-手性有序相的出现，并没有关闭平台自旋能隙。文中还讨论了这些结果与实验的相关性。
We study the magnetization plateau state of the three-leg spin-tube in the strong rung coupling region, wheresymmetry breaking and the low-energy chirality degree of freedom play crucial roles. On the basis of the effective chirality model and density matrix renormalization group, we clarify that, as the leg coupling increases, the chirality liquid with gapless nonmagnetic excitations, the spin-imbalance phase, and the vector-spin-chirality ordered phase emerge without closing the plateau spin gap. The relevance of these results to experiments is also discussed.