{
  "abstract": "Near-ideal, field-free superconducting diode behavior is demonstrated in room-temperature-grown Mo$_2$N/FePt bilayers. The response is consistent with remanent FePt stripe domains producing polarity-dependent thresholds for flux entry and vortex motion. Micromagnetic simulations reveal a periodic stray-field modulation across the stripes and asymmetric field enhancement near their ends at the bridge edges. One current polarity remains nearly dissipationless up to a sizable fraction of the estimated depairing current, whereas the opposite polarity develops dissipation at much lower current, yielding diode efficiencies up to approximately 85% in the thinner bilayer. The nonreciprocity can be continuously tuned by the in-plane magnetic preparation angle and reversibly switched by reverse-field excursions through the hysteretic reversal of the FePt layer. These results support edge-controlled flux entry and vortex motion as a route to high-efficiency superconducting diodes.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.16972",
  "author_total": 6,
  "authors": [
    {
      "name": "Juan S. Cruz"
    },
    {
      "name": "Emilio De Biasi"
    },
    {
      "name": "Juan C. Zapata"
    },
    {
      "name": "Yeonkyu Lee"
    },
    {
      "name": "Jeehoon Kim"
    },
    {
      "name": "Nestor Haberkorn"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/9ykg8f2hc09qf.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.16972",
  "fulltext_url": null,
  "id": "9ykg8f2hc09qf",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.16972",
  "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.supr-con"
    ],
    [
      "openalex",
      "3104|Physics of Superconductivity and Magnetism"
    ]
  ],
  "openalex": "W7221816101",
  "pdf_url": "https://arxiv.org/pdf/2610.16972",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-12",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/9ykg8f2hc09qf.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:29:06Z",
      "native_id": "2610.16972",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.16972"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.mtrl-sci",
      "subfield": "condensed-matter"
    }
  ],
  "title": "High-Efficiency Field-Free Superconducting Diodes in Mo$_2$N/FePt Bilayers",
  "title_text": "High-Efficiency Field-Free Superconducting Diodes in Mo_2N/FePt Bilayers",
  "type": "preprint",
  "updated_at": "2026-10-30T12:29:06Z",
  "url": "https://research.draconitic.com/paper/9ykg8f2hc09qf",
  "venue": "arXiv",
  "versions": []
}