{
  "abstract": "Multipolar-fluctuation analysis based on density functional theory combined with dynamical mean-field theory is extended from $4f^1$- to $4f^2$-electron systems. Two methodological developments are presented. First, many-particle states are constructed within the $j$-$j$ coupling scheme in the $j=5/2$ subspace, so as to reproduce the crystalline-electric-field splitting of the $4f^2$ Hund's-rule ground-state multiplet. Second, multipolar susceptibilities and interactions between $4f^2$ multiplets are derived through a mapping from single-particle to many-particle bases. We apply this framework to PrCdNi$_4$, which has a non-Kramers $Γ_3$ doublet ground state, and propose a $(3z^2-r^2)$-type antiferroquadrupolar order at $\\boldsymbol{q}=(2π,π,0)$ driven by the competition between nearest- and fourth-nearest-neighbor interactions. The formalism developed here is applicable to general $4f^n$-electron systems.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.11562",
  "author_total": 2,
  "authors": [
    {
      "name": "Koki Numa"
    },
    {
      "name": "Junya Otsuki"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/d0md5wrdwpp5r.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.11562",
  "fulltext_url": null,
  "id": "d0md5wrdwpp5r",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.11562",
  "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.str-el"
    ],
    [
      "openalex",
      "3104|Rare-earth and actinide compounds"
    ]
  ],
  "openalex": "W7221160381",
  "pdf_url": "https://arxiv.org/pdf/2610.11562",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-08",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/d0md5wrdwpp5r.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:27:54Z",
      "native_id": "2610.11562",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.11562"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.str-el",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Multipolar fluctuations in localized $4f^2$-electron systems from dynamical mean-field theory: application to $\\mathrm{PrCdNi}_4$",
  "title_text": "Multipolar fluctuations in localized 4f^2-electron systems from dynamical mean-field theory: application to PrCdNi_4",
  "type": "preprint",
  "updated_at": "2026-10-30T12:27:54Z",
  "url": "https://research.draconitic.com/paper/d0md5wrdwpp5r",
  "venue": "arXiv",
  "versions": []
}