论文标题
轨道选择性莫特阶段作为脱杂交固定点
Orbital-selective Mott phase as a dehybridization fixed point
论文作者
论文摘要
对基于铁的超导体和相关密切相关的系统的研究已将注意力集中在与抗磁磁性近端的不良金属正常状态上。轨道选择性的莫特阶段（OSMP）已被广泛讨论为锚定轨道选择性相关现象。在最近的实验中，我们提出了这样一个观念，即OSMP是相关驱动的脱缩合化的代名词。这个想法是根据轨道间跳和动态空间自旋相关性之间的竞争发展而发展的。在有效的模型中，由扩展的动态平均场理论（EDMFT）产生，并结合了连续的量子蒙特卡洛和分析方法，我们展示了OSMP是如何作为稳定的脱氢固定点出现的。同时，证明了OSMP的稳定性。讨论了这种机制与其他密切相关金属中部分定位 - 移位转变的连接。
Studies on the iron-based superconductors and related strongly correlated systems have focused attention on bad-metal normal state in proximity to antiferromagnetic order. An orbital-selective Mott phase (OSMP) has been extensively discussed as anchoring the orbital-selective correlation phenomena in this regime. Motivated by recent experiments, we advance the notion that an OSMP is synonymous to correlation-driven dehybridization. This idea is developed in terms of a competition between inter-orbital hopping and dynamical spatial spin correlations. Within effective models that arise from extended dynamical mean-field theory (EDMFT), and using a combination of continuous-time quantum Monte Carlo and analytical methods, we show how the OSMP emerges as a stable dehybridization fixed point. Concomitantly, the stability of the OSMP is demonstrated. Connections of this mechanism with partial localization-delocalization transition in other strongly correlated metals are discussed.
