{
  "abstract": "The superconducting gap symmetry of high-pressure bilayer nickelates remains under debate, with weak- and strong-coupling approaches yielding different pairing tendencies. In this work, we investigate how the weak-coupling treatment of electronic states away from the Fermi level influences magnetic fluctuations and superconductivity in La$_3$Ni$_2$O$_7$. We employ a full-spectrum model based on orthonormalized projections of Kohn-Sham states onto local Ni-$e_g$ orbitals, which preserves the density-functional band structure while redistributing spectral weight over a wide energy range. Compared to a low-energy description, this approach yields enhanced interlayer spin fluctuations and a commensurate magnetic instability. Within a spin-fluctuation framework, these features favor a sign-changing $s^\\pm$ superconducting state, whereas low-energy models tend to stabilize $d$-wave pairing. Our results suggest that interlayer coupling in full-energy models may play an important role in shaping the predicted pairing symmetry of bilayer nickelates.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.05185",
  "author_total": 6,
  "authors": [
    {
      "name": "Lauro B. Braz"
    },
    {
      "name": "Daniel D. Rivera"
    },
    {
      "name": "Emmanuel V. C. Lopes"
    },
    {
      "name": "George B. Martins"
    },
    {
      "name": "Gustavo M. Dalpian"
    },
    {
      "name": "Luis G. G. V. Dias da Silva"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/6mnmeyb783a2s.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.05185",
  "fulltext_url": null,
  "id": "6mnmeyb783a2s",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.05185",
  "language": null,
  "licence": "LicenseRef-arXiv-nonexclusive-1.0",
  "licence_label": "arXiv licence",
  "licence_source": "article",
  "licence_url": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "cond-mat.mtrl-sci"
    ],
    [
      "arxiv",
      "cond-mat.str-el"
    ],
    [
      "arxiv",
      "cond-mat.supr-con"
    ],
    [
      "openalex",
      "3104|Physics of Superconductivity and Magnetism"
    ]
  ],
  "openalex": "W7211895305",
  "pdf_url": "https://arxiv.org/pdf/2609.05185",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-04",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/6mnmeyb783a2s.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:19:14Z",
      "native_id": "2609.05185",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.05185"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.mtrl-sci",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Ni-O hybridization as a stabilizer for $s^{\\pm}$ superconductivity in La$_3$Ni$_2$O$_7$: a DFT+RPA study",
  "title_text": "Ni-O hybridization as a stabilizer for s^± superconductivity in La_3Ni_2O_7: a DFT+RPA study",
  "type": "preprint",
  "updated_at": "2026-10-30T12:19:14Z",
  "url": "https://research.draconitic.com/paper/6mnmeyb783a2s",
  "venue": "arXiv",
  "versions": []
}