{
  "abstract": "We employ terahertz Faraday magneto-optical spectroscopy to probe the relaxation dynamics of quantized helical Caroli-de Gennes-Matricon (CdGM) states in epitaxial FeTe$_{1-x}$Se$_x$ thin films, nodeless multiband superconductors with short coherence lengths in the moderately clean limit. By exploiting polarization-selective optical transitions, we directly resolve the helicity and band origin of vortex-core quasiparticles. We observe long-lived CdGM resonances with opposite circular polarizations for electron- and hole-like bands. This enables independent, band-resolved determination of quasiparticle lifetimes, vortex masses, coherence lengths, and upper critical fields, and reveals their systematic evolution with isovalent substitution. The results establish terahertz magneto-optics as a direct probe of helical vortex-core excitations and provide dynamical evidence for multiband CdGM states in iron-based superconductors.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": "Journal reference: Phys. Rev. Lett. 137, 176001 (2026)",
  "arxiv": "2606.03637",
  "author_total": 7,
  "authors": [
    {
      "name": "T. Rõõm"
    },
    {
      "name": "A. Glezer Moshe"
    },
    {
      "name": "R. Nagarajan"
    },
    {
      "name": "U. Nagel"
    },
    {
      "name": "Hee Taek Yi"
    },
    {
      "name": "Seongshik Oh"
    },
    {
      "name": "G. Blumberg"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/dkz2b5qkhytkc.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2606.03637",
  "fulltext_url": null,
  "id": "dkz2b5qkhytkc",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2606.03637",
  "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.supr-con"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2606.03637",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-25",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/dkz2b5qkhytkc.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:35:35Z",
      "native_id": "2606.03637",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2606.03637"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.supr-con",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Chirality-Resolved Spectroscopy of Caroli-de Gennes-Matricon States in Multiband FeTe$_{1-x}$Se$_{x}$ Superconductors",
  "title_text": "Chirality-Resolved Spectroscopy of Caroli-de Gennes-Matricon States in Multiband FeTe_1−xSe_x Superconductors",
  "type": "preprint",
  "updated_at": "2026-10-30T12:35:35Z",
  "url": "https://research.draconitic.com/paper/dkz2b5qkhytkc",
  "venue": "arXiv",
  "versions": [
    {
      "doi": "10.1103/wrds-99zb",
      "pid": null,
      "relation": "published-as",
      "title": null,
      "venue": null
    }
  ]
}