2022/03/11 by Haoyu Hu, Hu, Haoyu, Chen, Lei +5 · 1 citation
Materials Science · Physics and Astronomy · #FOS: Physical sciences #Iron-based superconductors research #Physics of Superconductivity and Magnetism #Rare-earth and actinide compounds #Strongly Correlated Electrons (cond-mat.str-el) #Superconductivity (cond-mat.supr-con)
paper · pdf · doi:10.48550/arxiv.2203.06140
openalex publication_date 2022/03/11 · openalex created_date 2022/04/03 · openalex updated_date 2026/07/28
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.