Orbital-selective Mott physics in iron chalcogenides and iron pnictides

The orbital-selective electron correlation effects have been recognized to be a key characteristic of multi-orbital systems with both Hubbard and Hund's interactions, and to be important for understanding both the normal state and superconducting properties of the iron-based superconductors [1,2,3,4,5]. In this talk, I will specifically address the effects of the orbital-selective Mott physics on the electronic structure renormalization and Fermi surface reconstruction in both the iron chalcogenides and iron pnictides and the interplay with nematicity and superconductivity [6,7,8].

References:
[1] "Orbital selectivity in electron correlations and superconducting pairing of iron-based superconductors", R Yu, H Hu, E M. Nica, J-X Zhu, Q Si, Front. Phys. 9, 578347 (2021).
[2] "High temperature superconductivity in iron pnictides and chalcogenides", Q Si, R Yu and E Abrahams, Nature Rev. Mater. 1, 16017 (2016).
[3] "Orbital-selective Mott phase in multiorbital models for iron pnictides and chalcogenides", R Yu, Q Si, Phys. Rev. B 96, 125110 (2017).
[4] "Orbital selectivity enhanced by nematic order in FeSe", R Yu, J-X Zhu, Q Si, Phys. Rev. Lett. 121, 227003 (2018).
[5] "Orbital-selective superconductivity in the nematic phase of FeSe", H Hu, R, E M Nica, J-X Zhu, Q Si, Phys. Rev. B 98, 220503 (2018).
[6] "Orbital-selective Mott phase as a dehybridization fixed point", H Hu, L Chen, J-X Zhu, R Yu, Q Si, arXiv:2203.06140.
[7] "Correlation-Driven Electronic Reconstruction in FeTe1-xSex", J Huang, R Yu et al, Commun Phys 5, 29 (2022).
[8] "Orbital-selective correlations and renormalized electronic structure in LiFeAs", H Lin, R Yu, J-X Zhu, Q Si, arXiv: 2101.05598.