{
  "abstract": "We investigated pressure effects on the nontrivial heavy-fermion antiferromagnet CeMnSi by means of electrical resistivity and powder X-ray diffraction. With increasing pressure, the antiferromagnetic order of Mn (T_N ~ 240 K at ambient pressure) is rapidly suppressed and disappears at P_c ~ 1.3 GPa. Instead, a pressure-induced anomaly appears at T_M ~ 97 K and shifts to higher temperatures with increasing pressure. The switching of the Mn magnetic state may reflect a modification of the magnetic symmetry of the system, which could influence the stability of the heavy-fermion state. In the low-pressure region, non-Fermi-liquid-like behavior characterized by nearly T-linear resistivity is observed around 0.7 GPa. In addition, the resistivity shows a marked reduction below T_M and a qualitative change toward more metallic behavior above the structural transition pressure P_s ~ 5.7 GPa. At ambient pressure, CeMnSi exhibits negative thermal expansion below ~40 K, which is absent in LaMnSi, supporting the formation of a heavy-fermion ground state.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": "Journal reference: J. Phys. Soc. Jpn. 95, 104704 (2026)",
  "arxiv": "2605.18230",
  "author_total": 9,
  "authors": [
    {
      "name": "Sae Nishiyama"
    },
    {
      "name": "Haruka Mima"
    },
    {
      "name": "Jun-ichi Hayashi"
    },
    {
      "name": "Keiki Takeda"
    },
    {
      "name": "Chihiro Sekine"
    },
    {
      "name": "Yoshiya Uwatoko"
    },
    {
      "name": "Hiroki Takahashi"
    },
    {
      "name": "Hiroshi Tanida"
    },
    {
      "name": "Yukihiro Kawamura"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/7jp0qtz132jmr.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2605.18230",
  "fulltext_url": null,
  "id": "7jp0qtz132jmr",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2605.18230",
  "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": null,
  "pdf_url": "https://arxiv.org/pdf/2605.18230",
  "pmcid": null,
  "pmid": null,
  "published": "2026-05-18",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/7jp0qtz132jmr.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:19:48Z",
      "native_id": "2605.18230",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2605.18230"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.str-el",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Pressure Effects on CeMnSi: Evolution of Ce 4f and Mn 3d Electronic States and Negative Thermal Expansion",
  "title_text": "Pressure Effects on CeMnSi: Evolution of Ce 4f and Mn 3d Electronic States and Negative Thermal Expansion",
  "type": "preprint",
  "updated_at": "2026-10-30T12:19:48Z",
  "url": "https://research.draconitic.com/paper/7jp0qtz132jmr",
  "venue": "arXiv",
  "versions": [
    {
      "doi": "10.7566/jpsj.95.104704",
      "pid": null,
      "relation": "published-as",
      "title": null,
      "venue": null
    }
  ]
}