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摘要翻译：
研究了二维三角晶格中类伊辛自旋轨道相互作用系统的相变和临界性质。我们首先证明了该体系的基态是一个复合的自旋-轨道铁有序相。虽然Landau有效场理论预测了复合自旋-轨道有序的二级相变，但重整化群方法得到的临界指数表明，自旋-轨道有序-无序相变远不是二级相变，而是更接近一级相变，这意味着在许多过渡金属氧化物中广泛观察到的一级相变可能是本征的。转变点附近异常的临界行为归因于复合序参量的分馏化。
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英文标题：
《Phase transition and critical properties of spin-orbital interacting
systems》
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作者：
Huai-Bao Tang, Dong-Meng Chen, Xiang-Fei Wei, and Liang-Jian Zou
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最新提交年份：
2007
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分类信息：
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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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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英文摘要：
Phase transition and critical properties of Ising-like spin-orbital interacting systems in 2-dimensional triangular lattice are investigated. We first show that the ground state of the system is a composite spin-orbital ferro-ordered phase. Though Landau effective field theory predicts the second-order phase transition of the composite spin-orbital order, however, the critical exponents obtained by the renormalization group approach demonstrate that the spin-orbital order-disorder transition is far from the second-order, rather, it is more close to the first-order, implying that the widely observed first-order transition in many transition-metal oxides may be intrinsic. The unusual critical behavior near the transition point is attributed to the fractionalization of the composite order parameter.
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PDF链接：
https://arxiv.org/pdf/709.4064
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