{
  "abstract": "We report a comprehensive experimental study including density functional theory calculations detailing the magnetic ground state of the $S = 1/2$ Mo$^{5+}$ pyrophosphate, LiMoOP2O7, and its magnetic excitations. Neutron powder diffraction measurements confirm the $P2_1/n$ structural model which is comprised of a three-legged ladder of distorted Mo$^{5+}$ octahedra. Magnetometry and specific heat reveal a long-range magnetic ordering transition at $T_\\textrm{N} = 3.5$~K and a field-induced transition at $μ_{0}$H$_\\textrm{c}$ = 1 T. This zero-field long-range magnetic order was determined to be a commensurate $κ= 0$ order with an ordered moment that is reduced from the full $S = 1/2$ magnetic moment by 30%. Through inelastic neutron scattering measurements and density functional theory calculations, we define the minimal microscopic model and resolve the spin Hamiltonian up to the seventh leading exchange parameter, resulting in a model with dominant antiferromagnetic leg interactions, weaker ferromagnetic rung interactions, and a significant interlayer ferromagnetic coupling.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.16856",
  "author_total": 7,
  "authors": [
    {
      "name": "Aly H Abdeldaim"
    },
    {
      "name": "Alexander A. Tsirlin"
    },
    {
      "name": "Jacques Ollivier"
    },
    {
      "name": "Clemens Ritter"
    },
    {
      "name": "Robin S. Perry"
    },
    {
      "name": "Lucy Clark"
    },
    {
      "name": "Gøran J. Nilsen"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/6p824zbefdtyp.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.16856",
  "fulltext_url": null,
  "id": "6p824zbefdtyp",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.16856",
  "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",
      "3104|Advanced Condensed Matter Physics"
    ]
  ],
  "openalex": "W7221820047",
  "pdf_url": "https://arxiv.org/pdf/2610.16856",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-12",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/6p824zbefdtyp.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:29:06Z",
      "native_id": "2610.16856",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.16856"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.str-el",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Magnetic properties and excitation spectrum of the S = 1/2 three-legged spin ladder, LiMoOP2O7",
  "title_text": "Magnetic properties and excitation spectrum of the S = 1/2 three-legged spin ladder, LiMoOP2O7",
  "type": "preprint",
  "updated_at": "2026-10-30T12:29:06Z",
  "url": "https://research.draconitic.com/paper/6p824zbefdtyp",
  "venue": "arXiv",
  "versions": []
}