{
  "abstract": "In La$_{1.55}$Sr$_{0.45}$CuO$_4$/La$_2$CuO$_4$ (LSCO/LCO) artificial high-$T_c$ superlattices (AHTS), grown by quantum material design, the superconducting dome can be tuned by varying the geometric ratio $L/d$, where $L$ is the LCO layer thickness and $d$ is the superlattice nanoscale period. Here, we combine hard X-ray photoelectron spectroscopy (HAXPES) and polarization-dependent soft X-ray absorption spectroscopy (XAS) to probe how the electronic structure evolves across the $L/d$-tuned superconducting dome. We observe systematic chemical-potential evolution across the series, together with enhanced spectral weight near the Fermi level, enhanced local and non-local screening signatures, and increased in-plane orbital polarization near the top of the dome. Together, these spectroscopic signatures provide insight into the emergence of Fano-Feshbach resonant superconductivity in the LSCO/LCO AHTS series.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.02668",
  "author_total": 8,
  "authors": [
    {
      "name": "U. M. Jayathilake"
    },
    {
      "name": "S. Sheikh"
    },
    {
      "name": "T. -L. Lee"
    },
    {
      "name": "C. Klewe"
    },
    {
      "name": "G. Logvenov"
    },
    {
      "name": "G. Campi"
    },
    {
      "name": "A. Bianconi"
    },
    {
      "name": "A. X. Gray"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/0f87b2h6arz20.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.02668",
  "fulltext_url": null,
  "id": "0f87b2h6arz20",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.02668",
  "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": "W7207740551",
  "pdf_url": "https://arxiv.org/pdf/2609.02668",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-02",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/0f87b2h6arz20.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:18:16Z",
      "native_id": "2609.02668",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.02668"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.mtrl-sci",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Electronic Structure and Superconductivity in La$_{1.55}$Sr$_{0.45}$CuO$_4$/La$_2$CuO$_4$ Artificial High-$T_c$ Superlattices Probed by Hard and Soft X-ray Spectroscopy",
  "title_text": "Electronic Structure and Superconductivity in La_1.55Sr_0.45CuO_4/La_2CuO_4 Artificial High-T_c Superlattices Probed by Hard and Soft X-ray Spectroscopy",
  "type": "preprint",
  "updated_at": "2026-10-30T12:18:16Z",
  "url": "https://research.draconitic.com/paper/0f87b2h6arz20",
  "venue": "arXiv",
  "versions": []
}