{
  "abstract": "Hexagonal chromium diboride CrB$_2$ is a metallic frustrated antiferromagnet with a Néel temperature $T_N \\sim$ 88 K. In CrB$_2$, Cr 3$d$ electrons not only give rise to localized magnetic moments but also contribute to metallic conduction. We perform ultrasound velocity measurements on a single crystal of hexagonal CrB$_2$ to determine its elastic properties. The temperature dependence of the $ab$-plane shear elastic modulus exhibits Curie-type softening upon cooling from $\\sim$120 K down to $T_N$. This behavior is interpreted as a precursor to a symmetry-lowering lattice distortion at $T_N$, indicating that magnetic frustration is relieved via transverse magnetoelastic coupling. In addition, the $a$-axis and $c$-axis compressive elastic moduli show unusual softness and their suppression upon cooling, which are naturally explained by Fermi-surface nesting and its suppression upon cooling. The present results suggest that, in CrB$_2$, longitudinal magnetoelastic coupling suppresses Fermi-surface nesting and enhances frustrated exchange interactions, while transverse magnetoelastic coupling plays a key role in relieving the frustration.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": "Journal reference: Phys. Rev. B 114, 144409 (2026)",
  "arxiv": "2605.25564",
  "author_total": 5,
  "authors": [
    {
      "name": "Tadataka Watanabe"
    },
    {
      "name": "Mai Watanabe"
    },
    {
      "name": "Sakurako Suganuma"
    },
    {
      "name": "Andreas Bauer"
    },
    {
      "name": "Christian Pfleiderer"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/0wdwz3z2a9zrd.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2605.25564",
  "fulltext_url": null,
  "id": "0wdwz3z2a9zrd",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2605.25564",
  "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"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2605.25564",
  "pmcid": null,
  "pmid": null,
  "published": "2026-05-25",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/0wdwz3z2a9zrd.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:19:52Z",
      "native_id": "2605.25564",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2605.25564"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.mtrl-sci",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Magnetoelastic effects in the metallic frustrated antiferromagnet CrB$_2$",
  "title_text": "Magnetoelastic effects in the metallic frustrated antiferromagnet CrB_2",
  "type": "preprint",
  "updated_at": "2026-10-30T12:19:52Z",
  "url": "https://research.draconitic.com/paper/0wdwz3z2a9zrd",
  "venue": "arXiv",
  "versions": [
    {
      "doi": "10.1103/b4zd-yhkl",
      "pid": null,
      "relation": "published-as",
      "title": null,
      "venue": null
    }
  ]
}