{
  "abstract": "The discovery of high-temperature superconductivity in bilayer and trilayer nickelates has spurred intense interest in the Ruddlesden-Popper nickelates; yet the fundamental properties of the NiO2 layer remain obscured by interlayer coupling. It is therefore imperative to investigate the electronic properties of their single-layer counterpart to isolate the intrinsic physics of the NiO layer. In this work, we present a systematic study of the single-layer nickelate La1.4Sr0.6NiO4 using high-resolution angle-resolved photoemission spectroscopy (ARPES) and theoretical calculations. We reveal strong electron correlation effects, manifested by high-energy kinks in band dispersions and a pronounced orbital-dependent band renormalization. Interestingly, we observe a quasi-one-dimensional electronic structure characterized by straight Fermi surface sheets along the diagonal momentum directions. Such square Fermi surface topology facilitates non-Fermi liquid behavior consistent with the Luttinger liquid model, as evidenced by the power-law spectral function, robust temperature scaling, and the observation of spin-charge separation. Our results therefore not only unveil an exotic Luttinger liquid behavior emerging from the unexpected dimensional reduction in an intrinsically quasi-two-dimensional nickelate but also provide a new perspective for understanding the intriguing physics in multilayer nickelates.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.07656",
  "author_total": 22,
  "authors": [
    {
      "name": "Yinqi Hu"
    },
    {
      "name": "Yidian Li"
    },
    {
      "name": "Xian Du"
    },
    {
      "name": "Wenxuan Zhao"
    },
    {
      "name": "Kaiyi Zhai"
    },
    {
      "name": "Senyao Zhang"
    },
    {
      "name": "Jiawei Shao"
    },
    {
      "name": "Mingxin Mao"
    },
    {
      "name": "Houke Chen"
    },
    {
      "name": "Jieyi Liu"
    },
    {
      "name": "Donghui Lu"
    },
    {
      "name": "Makoto Hashimoto"
    },
    {
      "name": "Fangyuan Zhu"
    },
    {
      "name": "Zhengtai Liu"
    },
    {
      "name": "Dawei Shen"
    },
    {
      "name": "Yaobo Huang"
    },
    {
      "name": "Zhongkai Liu"
    },
    {
      "name": "D. Prabhakaran"
    },
    {
      "name": "Yanpeng Qi"
    },
    {
      "name": "Yilin Wang"
    },
    {
      "name": "Yulin Chen"
    },
    {
      "name": "Lexian Yang"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/1gzd6bc98bk2j.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.07656",
  "fulltext_url": null,
  "id": "1gzd6bc98bk2j",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.07656",
  "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"
    ],
    [
      "arxiv",
      "cond-mat.supr-con"
    ],
    [
      "openalex",
      "3104|Physics of Superconductivity and Magnetism"
    ]
  ],
  "openalex": "W7220922719",
  "pdf_url": "https://arxiv.org/pdf/2610.07656",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-06",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/1gzd6bc98bk2j.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:27:22Z",
      "native_id": "2610.07656",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.07656"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.str-el",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Luttinger Liquid Behavior in a Single-Layer Nickelate La1.4Sr0.6NiO4",
  "title_text": "Luttinger Liquid Behavior in a Single-Layer Nickelate La1.4Sr0.6NiO4",
  "type": "preprint",
  "updated_at": "2026-10-30T12:27:22Z",
  "url": "https://research.draconitic.com/paper/1gzd6bc98bk2j",
  "venue": "arXiv",
  "versions": []
}