{
  "abstract": "We present a comparative Ni core level photoemission study of La$_3$Ni$_2$O$_7$, Nd$_3$Ni$_2$O$_7$, and LaNiO$_3$ using both the Ni $2p$ and the Ni $1s$. We address the challenges in analyzing the widely investigated Ni $2p$ spectra arising from the substantial overlap in energy of the Ni $2p$ with the La $3d$. We show that on the other hand the deep Ni $1s$ core level does provide a clean view on the intrinsic electronic excitations and we highlight its potential to resolve detailed differences in the electronic structure within the strongly correlated Ruddlesden-Popper series La$_{n+1}$Ni$_n$O$_{3n+1}$.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": "Journal reference: Phys. Rev. B 114, 185129 (2026)",
  "arxiv": "2606.17663",
  "author_total": 18,
  "authors": [
    {
      "name": "Daisuke Takegami"
    },
    {
      "name": "Naoki Ito"
    },
    {
      "name": "Koto Fujinuma"
    },
    {
      "name": "Masato Yoshimura"
    },
    {
      "name": "Grace A. Pan"
    },
    {
      "name": "Dan Ferenc Segedin"
    },
    {
      "name": "Qi Song"
    },
    {
      "name": "Hanjong Paik"
    },
    {
      "name": "Charles M. Brooks"
    },
    {
      "name": "Hanjie Guo"
    },
    {
      "name": "Alexander C. Komarek"
    },
    {
      "name": "Takanori Taniguchi"
    },
    {
      "name": "Masaki Fujita"
    },
    {
      "name": "Julia A. Mundy"
    },
    {
      "name": "Takashi Mizokawa"
    },
    {
      "name": "Liu Hao Tjeng"
    },
    {
      "name": "Berit H. Goodge"
    },
    {
      "name": "Atsushi Hariki"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/c3pja6kegm70q.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2606.17663",
  "fulltext_url": null,
  "id": "c3pja6kegm70q",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2606.17663",
  "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.mtrl-sci"
    ],
    [
      "arxiv",
      "cond-mat.str-el"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2606.17663",
  "pmcid": null,
  "pmid": null,
  "published": "2026-06-16",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/c3pja6kegm70q.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:24:52Z",
      "native_id": "2606.17663",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2606.17663"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.mtrl-sci",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Probing La-based nickelates with Ni 1$s$ core-level photoelectron spectroscopy",
  "title_text": "Probing La-based nickelates with Ni 1s core-level photoelectron spectroscopy",
  "type": "preprint",
  "updated_at": "2026-10-30T12:24:52Z",
  "url": "https://research.draconitic.com/paper/c3pja6kegm70q",
  "venue": "arXiv",
  "versions": [
    {
      "doi": "10.1103/fkvs-lfjm",
      "pid": null,
      "relation": "published-as",
      "title": null,
      "venue": null
    }
  ]
}