{
  "abstract": "Strongly correlated chiral materials have been proposed to host a chiral Weyl-Kondo semimetal (cWKSM) state, in which Kondo hybridization pins chirality-induced Kramers-Weyl point crossings, together with additional symmetry-enforced band crossings, near the Fermi level. Realizing this state requires a material that combines crystal chirality, non-symmorphic symmetry, and Kondo correlations, and currently there are no known materials that combine all these requirements. Here we report evidence for a cWKSM state in CeGaGe, a member of the RXY (R = rare earth; X = Al, Si; Y = Ga, Ge) family. Magnetization measurements confirm long-range antiferromagnetic order below T$_N$ = 4.7 K with a complex, canted magnetic structure. Unique to CeGaGe among the known RXY systems is a structural transition from an achiral tetragonal I4$_{1}$md structure (at high temperatures) to the chiral tetragonal P4$_{3}$ structure (at low temperatures). The structural transition in CeGaGe allows us to highlight the role of chirality in stabilizing the Kramers cWKSM state. Hall resistivity measurements with $H || c$ reveal an anomalous Hall conductivity (AHC) that is constant below the Kondo temperature $T_K \\approx 7$ K and drops sharply above it. This crossover tracks the onset of Kondo coherence rather than the magnetic ordering, which occurs at T$_N$ = 4.7 K. Together with first-principles calculations for the $P4_3$ structure, this identifies the AHC as an intrinsic, Berry-curvature-driven contribution generated by Kondo hybridization, rather than a consequence of extrinsic scattering or dynamic scalar spin chirality. These results establish CeGaGe as a rare experimental platform in which crystal chirality, strong electronic correlations, and non-trivial band topology coexist, providing the first material realization of a Kondo-driven cWKSM state.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.32012",
  "author_total": 14,
  "authors": [
    {
      "name": "Arushi"
    },
    {
      "name": "Kevin Allen"
    },
    {
      "name": "Yuan Fang"
    },
    {
      "name": "Kuan-Sen Lin"
    },
    {
      "name": "Mounica Mahankali"
    },
    {
      "name": "Hari Bhandari"
    },
    {
      "name": "Karthik Rao"
    },
    {
      "name": "Alberto Ruiz Biestro"
    },
    {
      "name": "Christopher Lane"
    },
    {
      "name": "Jian-Xin Zhu"
    },
    {
      "name": "Sanu Mishra"
    },
    {
      "name": "Geoffroy Hautier"
    },
    {
      "name": "Qimiao Si"
    },
    {
      "name": "Emilia Morosan"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/aw59wbdkcrypa.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.32012",
  "fulltext_url": null,
  "id": "aw59wbdkcrypa",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.32012",
  "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",
      "3107|Topological Materials and Phenomena"
    ]
  ],
  "openalex": "W7214753457",
  "pdf_url": "https://arxiv.org/pdf/2609.32012",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-07",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/aw59wbdkcrypa.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:27:54Z",
      "native_id": "2609.32012",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.32012"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.str-el",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Chiral Weyl-Kondo semimetallic state through enhanced correlation in CeGaGe",
  "title_text": "Chiral Weyl-Kondo semimetallic state through enhanced correlation in CeGaGe",
  "type": "preprint",
  "updated_at": "2026-10-30T12:27:54Z",
  "url": "https://research.draconitic.com/paper/aw59wbdkcrypa",
  "venue": "arXiv",
  "versions": []
}