{
  "abstract": "In the heavy-fermion metal YbRh2Si2, quantum criticality at a suppressed antiferromagnetic order is governed by the interplay of local magnetic moments and itinerant conduction electrons. We demonstrate how this can be investigated by a new experimental approach that enables the observation of electron spin resonance (ESR) across a broad range of frequencies and fields at very low temperatures. This allowed us to cover a large part of the phase diagram from the paramagnetic Fermi-liquid phase to the phase with antiferromagnetic order and including the quantum-critical regime. Both the ESR g-factor and the linewidth present distinct behaviors in these three regimes, providing further insight into the physics across a quantum critical point. Notably, when cooling down at a field directly towards the quantum critical point, both g-factor and linewidth continuously decrease. Furthermore, we observe a very good matching of the g-factor behavior upon field-tuning and temperature-tuning towards the quantum-critical point. We analyze and discuss the results in the context of present theories on ESR in strongly correlated electron systems.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": "Journal reference: Phys. Rev. Lett. 137, 136506 (2026)",
  "arxiv": "2609.03994",
  "author_total": 9,
  "authors": [
    {
      "name": "Marc Scheffler"
    },
    {
      "name": "Jörg Sichelschmidt"
    },
    {
      "name": "Conrad Clauss"
    },
    {
      "name": "Mojtaba Javaheri Rahim"
    },
    {
      "name": "Boris I. Kochelaev"
    },
    {
      "name": "Cornelius Krellner"
    },
    {
      "name": "Christoph Geibel"
    },
    {
      "name": "Frank Steglich"
    },
    {
      "name": "Martin Dressel"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/aqpy5a2c1h1qn.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.03994",
  "fulltext_url": null,
  "id": "aqpy5a2c1h1qn",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.03994",
  "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"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2609.03994",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-08",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/aqpy5a2c1h1qn.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:27:54Z",
      "native_id": "2609.03994",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.03994"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.str-el",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Evolution of electron spin resonance through a metallic quantum critical phase diagram",
  "title_text": "Evolution of electron spin resonance through a metallic quantum critical phase diagram",
  "type": "preprint",
  "updated_at": "2026-10-30T12:27:54Z",
  "url": "https://research.draconitic.com/paper/aqpy5a2c1h1qn",
  "venue": "arXiv",
  "versions": [
    {
      "doi": "10.1103/y227-dk8f",
      "pid": null,
      "relation": "published-as",
      "title": null,
      "venue": null
    }
  ]
}