[2312.09014] Hole doping and electronic correlations in Cr-substituted BaFe$_{2}$As$_{2}$ Skip to main content Search Submit Donate Log in Search arXiv Press Enter to search · Advanced search Condensed Matter > Strongly Correlated Electrons arXiv:2312.09014 (cond-mat) [Submitted on 14 Dec 2023 ( v1 ), last revised 23 Aug 2024 (this version, v3)] Title: Hole doping and electronic correlations in Cr-substituted BaFe$_{2}$As$_{2}$ Authors: Marli R. Cantarino , K. R. Pakuszewski , Björn Salzmann , Pedro H. A. Moya , Wagner R. da Silva Neto , G. S. Freitas , P. G. Pagliuso , C. Adriano , Walber H. Brito , Fernando A. Garcia View a PDF of the paper titled Hole doping and electronic correlations in Cr-substituted BaFe$_{2}$As$_{2}$, by Marli R. Cantarino and 9 other authors View PDF HTML (experimental) Abstract: Superconductivity (SC) is absent in Cr-substituted BaFe$_{2}$As$_{2}$ (CrBFA), a well-established but poorly understood topic. Additionally, the suppression of the spin density wave transition temperature ($T_{\text{SDW}}$) in CrBFA and Mn-substituted BaFe$_{2}$As$_{2}$ (MnBFA) coincides as a function of Cr/Mn content, despite the distinct electronic effects of these substitutions. In this work, we employ angle-resolved photoemission spectroscopy (ARPES) and combined density functional theory plus dynamical mean field theory calculations (DFT+DMFT) to address the evolution of the Fermi surface (FS) and electronic correlations in CrBFA. Our findings reveal that incorporating Cr leads to an effective hole doping of the states near the FS, which is well described within the virtual crystal approximation (VCA). We analyzed the electronic band spectra with main $d_{yz}$-orbital character and found a fractional scaling of the imaginary part of self-energy as a function of the binding energy, a signature property of Hund's correlations. We conclude that CrBFA is a correlated electron system and the changes in the FS as a function of Cr are unrelated to the suppression of $T_{\text{SDW}}$. We suggest that the absence of SC is primarily due to the competition between Cr local moments and the Fe-derived itinerant spin fluctuations. Comments: 18 pages, 5 figures Submission to SciPost Physics Subjects: Strongly Correlated Electrons (cond-mat.str-el) ; Superconductivity (cond-mat.supr-con) Cite as: arXiv:2312.09014 [cond-mat.str-el] (or arXiv:2312.09014v3 [cond-mat.str-el] for this version) https://doi.org/10.48550/arXiv.2312.09014 Focus to learn more arXiv-issued DOI via DataCite Related DOI : https://doi.org/10.21468/SciPostPhys.17.5.141 Focus to learn more DOI(s) linking to related resources Submission history From: Marli Dos Reis Cantarino [ view email ] [v1] Thu, 14 Dec 2023 15:03:11 UTC (4,687 KB) [v2] Fri, 19 Apr 2024 13:15:22 UTC (4,715 KB) [v3] Fri, 23 Aug 2024 15:06:29 UTC (4,629 KB) Full-text links: Access Paper: View a PDF of the paper titled Hole doping and electronic correlations in Cr-substituted BaFe$_{2}$As$_{2}$, by Marli R. Cantarino and 9 other authors View PDF HTML (experimental) TeX Source view license Current browse context: cond-mat.str-el < prev | next > new | recent | 2023-12 Change to browse by: cond-mat cond-mat.supr-con References & Citations NASA ADS Google Scholar Semantic Scholar export BibTeX citation Loading... BibTeX formatted citation × loading... 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