{
  "abstract": "We uncover the microscopic mechanism underlying the antiparallel Nd-Fe coupling in the intermetallic 4$f$-3$d$-5$p$ compound Nd$_3$Fe$_3$Sb$_7$ by means of high-field x-ray magnetic circular dichroism (XMCD) spectroscopy, complemented by magnetization measurements and density-functional-theory (DFT) calculations. This coupling is unexpected for intermetallics composed of light rare-earth and transition-metal elements. Sb $M_{4,5}$-edge XMCD measurements indicate a clear spin polarization of Sb 5$p$ states antiparallel to the Fe 3$d$ moments. DFT calculations reveal the site-dependent character of the Sb moments and, together with the Fe-Sb antiparallel alignment seen by XMCD, identify a Fe 3$d$-Sb 5$p$-Nd 5$d$ hybridization pathway for the antiparallel Nd-Fe coupling. Pulsed-field XMCD reveals a field-induced spin reorientation through the evolution of the $c$-axis projections of the Nd and Fe moments. Nd$_3$Fe$_3$Sb$_7$, thus, provides a platform for exploring antiparallel rare-earth-transition-metal ($R$-$T$) coupling mediated by transition-metal 3$d$-ligand $p$-rare-earth 5$d$ hybridization in light-$R$-$T$ intermetallics with $p$-elements.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.20883",
  "author_total": 18,
  "authors": [
    {
      "name": "S. Palazzese"
    },
    {
      "name": "Sh. Yamamoto"
    },
    {
      "name": "T. Kotte"
    },
    {
      "name": "R. Ray"
    },
    {
      "name": "F. Pabst"
    },
    {
      "name": "S. Chattopadhyay"
    },
    {
      "name": "D. I. Gorbunov"
    },
    {
      "name": "T. Herrmannsdörfer"
    },
    {
      "name": "K. Kummer"
    },
    {
      "name": "A. Kurtanidze"
    },
    {
      "name": "E. Weschke"
    },
    {
      "name": "O. Prokhnenko"
    },
    {
      "name": "K. Yamamoto"
    },
    {
      "name": "Y. Kotani"
    },
    {
      "name": "H. Nojiri"
    },
    {
      "name": "M. Ruck"
    },
    {
      "name": "Manuel Richter"
    },
    {
      "name": "J. Wosnitza"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/06m6g7fxq57rd.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.20883",
  "fulltext_url": null,
  "id": "06m6g7fxq57rd",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.20883",
  "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"
    ],
    [
      "openalex",
      "3104|Rare-earth and actinide compounds"
    ]
  ],
  "openalex": "W7222638781",
  "pdf_url": "https://arxiv.org/pdf/2610.20883",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-14",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/06m6g7fxq57rd.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:29:50Z",
      "native_id": "2610.20883",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.20883"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.mtrl-sci",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Sb-5$p$-mediated antiparallel Nd-Fe coupling in Nd$_3$Fe$_3$Sb$_7$",
  "title_text": "Sb-5p-mediated antiparallel Nd-Fe coupling in Nd_3Fe_3Sb_7",
  "type": "preprint",
  "updated_at": "2026-10-30T12:29:50Z",
  "url": "https://research.draconitic.com/paper/06m6g7fxq57rd",
  "venue": "arXiv",
  "versions": []
}