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 |
|---|---|
| Date Type: | Publication |
| Status: | Published |
| Schools: | Professional Services > Advanced Research Computing @ Cardiff (ARCCA) Schools > 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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