{
  "abstract": "Ultrafast pump-probe spectroscopy is indispensable for investigating interactions, collective excitations, and nonequilibrium dynamics in superconductors and correlated electron systems. However, how a small gap opening near Fermi surface affects the spectral changes in the high-energy interband transition region remains elusive. To address this issue, we perform systematic studies of carrier relaxation dynamics in the prototype charge-density-wave (CDW) material EuAl4. We find that the CDW gap shrinks substantially under optical pumping. This band renormalization strongly modulates interband transitions associated with the gap edge, inducing a pronounced transient reflectivity change at the corresponding probe energies. These results establish a direct link between low-energy order-parameter dynamics and high-energy spectral responses, providing a general framework for interpreting transient signals in gapped quantum materials.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.05175",
  "author_total": 11,
  "authors": [
    {
      "name": "Qiong Wu"
    },
    {
      "name": "Tianchen Hu"
    },
    {
      "name": "Junhan Huang"
    },
    {
      "name": "Yongjie Liu"
    },
    {
      "name": "Fei Sun"
    },
    {
      "name": "Shuxiang Xu"
    },
    {
      "name": "Li Yue"
    },
    {
      "name": "Zijian Lin"
    },
    {
      "name": "Xinyu Zhou"
    },
    {
      "name": "Tao Dong"
    },
    {
      "name": "Nan-Lin Wang"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/4tvc5pgbc4601.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.05175",
  "fulltext_url": null,
  "id": "4tvc5pgbc4601",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.05175",
  "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.str-el"
    ],
    [
      "openalex",
      "3104|Physics of Superconductivity and Magnetism"
    ]
  ],
  "openalex": "W7220710910",
  "pdf_url": "https://arxiv.org/pdf/2610.05175",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-04",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/4tvc5pgbc4601.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:27:01Z",
      "native_id": "2610.05175",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.05175"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.str-el",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Unveiling High-Energy Ultrafast Responses Driven by Fermi-Level Gap Opening in Charge-Density Waves",
  "title_text": "Unveiling High-Energy Ultrafast Responses Driven by Fermi-Level Gap Opening in Charge-Density Waves",
  "type": "preprint",
  "updated_at": "2026-10-30T12:27:01Z",
  "url": "https://research.draconitic.com/paper/4tvc5pgbc4601",
  "venue": "arXiv",
  "versions": []
}