Craco, Luis and Leoni, Stefano ORCID: https://orcid.org/0000-0003-4078-1000 2022. Orbital selectivity in the normal state of KFe(2)Se(2) superconductor. European Physical Society Letters 136 (2) , 27002. 10.1209/0295-5075/ac3f16 |
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Abstract
Using density functional dynamical mean-field theory, we show how correlation effects lead to pseudogap and Kondo-quasiparticle features in the electronic structure of pure and doped KFe2Se2 superconductor. Therein, correlation- and doping-induced orbital differentiation are linked to the emergence of an incoherent-coherent crossover in the normal state of KFe2Se2 superconductor. This crossover explains the puzzling temperature and doping dependent evolution of resistivity and Hall coefficient, seen in experiments of alkali-metal intercalated iron-selenide superconductors. Our microscopic description emphasises the role of incoherent and coherent electronic excitations towards unconventional transport responses of strange, bad-metals.
Item Type: | Article |
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Date Type: | Publication |
Status: | Published |
Schools: | Advanced Research Computing @ Cardiff (ARCCA) Chemistry |
Publisher: | IOP Publishing |
ISSN: | 0295-5075 |
Date of First Compliant Deposit: | 25 January 2022 |
Date of Acceptance: | 1 December 2021 |
Last Modified: | 08 Nov 2024 23:00 |
URI: | https://orca.cardiff.ac.uk/id/eprint/146893 |
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