{
  "abstract": "Transferable hexagonal boron nitride (hBN) hosting negatively charged boron-vacancy (VB$^{-}$) spin defects offers a versatile platform for integrated quantum magnetometry, yet quantitative imaging of magnetic microstructures remains challenging. Here, we integrate a transferred hBN flake with a 4 $μ$m-diameter permalloy (Py = Ni${81}$Fe${19}$) microdisk and perform spatially resolved optically detected magnetic resonance measurements at room temperature. An applied in-plane magnetic field distorts the vortex-state magnetization, generating edge-localized magnetic surface charges and pronounced stray-field signatures at opposite disk edges. By referencing each pixel to its local zero-field splitting and correcting for a residual out-of-plane bias field, we quantitatively reconstruct the out-of-plane stray-field distribution, revealing peak fields of approximately 11.2 mT. An edge-charge model reproduces the spatial distribution and amplitude of the reconstructed field, linking the ODMR response to the field-driven evolution of the vortex state. These results establish transferred hBN VB$^{-}$ sensors for quantitative magnetometry of magnetic microstructures.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.21630",
  "author_total": 16,
  "authors": [
    {
      "name": "Peiting Wen"
    },
    {
      "name": "Shuyu Wen"
    },
    {
      "name": "Jiang Qu"
    },
    {
      "name": "Zeling Xiong"
    },
    {
      "name": "Katrin Schultheiss"
    },
    {
      "name": "Slawomir Prucnal"
    },
    {
      "name": "Artur Erbe"
    },
    {
      "name": "Kenji Watanabe"
    },
    {
      "name": "Takashi Taniguchi"
    },
    {
      "name": "Jürgen Lindner"
    },
    {
      "name": "Jürgen Fassbender"
    },
    {
      "name": "Manfred Helm"
    },
    {
      "name": "Shengqiang Zhou"
    },
    {
      "name": "Ruslan Salikhov"
    },
    {
      "name": "Helmut Schultheiss"
    },
    {
      "name": "Yonder Berencén"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/e3j3kvbvq8zze.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.21630",
  "fulltext_url": null,
  "id": "e3j3kvbvq8zze",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.21630",
  "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.mes-hall"
    ],
    [
      "arxiv",
      "quant-ph"
    ],
    [
      "openalex",
      "2505|Diamond and Carbon-based Materials Research"
    ]
  ],
  "openalex": "W7213955006",
  "pdf_url": "https://arxiv.org/pdf/2609.21630",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-18",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/e3j3kvbvq8zze.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:23:03Z",
      "native_id": "2609.21630",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.21630"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.mes-hall",
      "subfield": "condensed-matter"
    },
    {
      "field": "physics",
      "origin": "arxiv:quant-ph",
      "subfield": "quantum"
    }
  ],
  "title": "Spatially resolved quantum magnetometry and stray-field reconstruction of permalloy microdisks using boron-vacancy centers in hexagonal boron nitride",
  "title_text": "Spatially resolved quantum magnetometry and stray-field reconstruction of permalloy microdisks using boron-vacancy centers in hexagonal boron nitride",
  "type": "preprint",
  "updated_at": "2026-10-30T12:23:03Z",
  "url": "https://research.draconitic.com/paper/e3j3kvbvq8zze",
  "venue": "arXiv",
  "versions": []
}