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摘要翻译：
研究了含有铁磁主链的自旋1/2Heisenberg受挫α-链的基态相图。除铁磁相外，还发现了各种非磁基态。如果顶端自旋与主链之间的铁磁耦合较强，该模型可用自旋为1的双线性-双二次链来近似，除霍尔丹相和铁磁相外，还实现了自旋为2的无隙激发的自旋四极相。在尖端自旋与主链耦合较弱的情况下，得到了不同非磁相之间可能发生一系列相变的数值结果。根据数值结果讨论了这些相的物理图象。
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英文标题：
《Exotic Ground State Phases of $S=1/2$ Heisenberg $\Delta$-Chain with
Ferromagnetic Main Chain》
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作者：
Kazuo Hida
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最新提交年份：
2010
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分类信息：
一级分类：Physics 物理学
二级分类：Strongly Correlated Electrons 强关联电子
分类描述：Quantum magnetism, non-Fermi liquids, spin liquids, quantum criticality, charge density waves, metal-insulator transitions
量子磁学，非费米液体，自旋液体，量子临界性，电荷密度波，金属-绝缘体跃迁
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一级分类：Physics 物理学
二级分类：Statistical Mechanics 统计力学
分类描述：Phase transitions, thermodynamics, field theory, non-equilibrium phenomena, renormalization group and scaling, integrable models, turbulence
相变，热力学，场论，非平衡现象，重整化群和标度，可积模型，湍流
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英文摘要：
The ground state phase diagram of the spin-1/2 Heisenberg frustrated $\Delta$-chain with a ferromagnetic main chain is investigated. In addition to the ferromagnetic phase, various nonmagnetic ground states are found. If the ferromagnetic coupling between apical spins and the main chain is strong, this model is approximated by a spin-1 bilinear-biquadratic chain and the spin quadrupolar phase with spin-2 gapless excitation is realized in addition to the Haldane and ferromagnetic phases. In the regime where the coupling between the apical spins and the main chain is weak, the numerical results which suggest the possibility of a series of phase transitions among different nonmagnetic phases are obtained. Physical pictures of these phases are discussed based on the numerical results.
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PDF链接：
https://arxiv.org/pdf/709.1423
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