{
  "abstract": "Many correlated metals exhibit a crossover from low-temperature $ρ\\propto T^{2}$ behavior to a slower increase of the resistivity at elevated temperatures. Distinguishing phonon scattering from electron--electron correlations as the origin of this crossover is experimentally challenging. We introduce a simple phenomenological framework that isolates the contribution responsible for the high-temperature saturating tendency. This approach reveals a clear contrast between systems well known for the predominance of electron--phonon scattering and several iron-based superconductors. For the latter, the conductivity can be expressed as the sum of a Fermi-liquid-like term ($\\propto 1/T^{2}$) and a temperature-independent component, which together describe $ρ(T)$ up to $\\sim 250$ K in LiFeAs, KFe$_2$As$_2$, and KCaFe$_4$As$_4$. In FeSe, the same approach identifies a similar regime above the nematic transition, with a pronounced change toward nearly linear-in-$T$ resistivity below it. We discuss these findings in the broader context of coherence and electronic correlations in Hund's metals.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.28240",
  "author_total": 2,
  "authors": [
    {
      "name": "M. Lourdes Amigó"
    },
    {
      "name": "Jorge I. Facio"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/95w5hsx17sv41.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.28240",
  "fulltext_url": null,
  "id": "95w5hsx17sv41",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.28240",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "cond-mat.supr-con"
    ],
    [
      "openalex",
      "2504|Iron-based superconductors research"
    ]
  ],
  "openalex": "W7223090330",
  "pdf_url": "https://arxiv.org/pdf/2610.28240",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-20",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/95w5hsx17sv41.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:34:04Z",
      "native_id": "2610.28240",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.28240"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.supr-con",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Saturating $T^2$ resistivity in iron-based superconductors",
  "title_text": "Saturating T^2 resistivity in iron-based superconductors",
  "type": "preprint",
  "updated_at": "2026-10-30T12:34:04Z",
  "url": "https://research.draconitic.com/paper/95w5hsx17sv41",
  "venue": "arXiv",
  "versions": []
}