{
  "abstract": "We report a multi-cross micro-Hall sensor fabricated from an MBE-grown GaAs/AlGaAs heterostructure for high-sensitivity magnetometry. The device enables dc magnetization measurements at temperatures down to $\\sim$15~mK and in dc magnetic fields up to 30 T. Bulk samples with dimensions ranging from 100~$μ$m to 1~mm can be measured with a resolution better than 1$~μ$T with a 1~$μ$A excitation at 13.77 Hz. Test-of-performance measurements were carried out by probing the field-dependent magnetization plateaus of the triangular-lattice quantum magnet K$_{2}$Co$_{2}$(SeO$_{3}$)$_{3}$ at 20~mK, the antiferromagnetic transition of K${_3}$GdTe${_2}$O${_9}$ near 220 mK via temperature-dependent magnetization, and the quantum oscillations in a ruthenium single crystal. A simple and reliable sample-mounting setup that ensures reproducible magnetic measurements is provided.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2611.06676",
  "author_total": 7,
  "authors": [
    {
      "name": "Bingbing Tong"
    },
    {
      "name": "Yinina Ma"
    },
    {
      "name": "Zhenhua Zhao"
    },
    {
      "name": "Shuyu Zheng"
    },
    {
      "name": "Li Lu"
    },
    {
      "name": "Peijie Sun"
    },
    {
      "name": "Gang Li"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/8xp1aew8wnegv.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2611.06676",
  "fulltext_url": null,
  "id": "8xp1aew8wnegv",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2611.06676",
  "language": null,
  "licence": "CC-BY-NC-ND-4.0",
  "licence_label": "CC BY-NC-ND 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "cond-mat.mtrl-sci"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2611.06676",
  "pmcid": null,
  "pmid": null,
  "published": "2026-11-04",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/8xp1aew8wnegv.ris",
  "sources": [
    {
      "first_seen": "2026-11-05T15:20:56Z",
      "native_id": "2611.06676",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2611.06676"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.mtrl-sci",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Millikelvin magnetometry up to 30~T using a multi-cross micro-Hall sensor",
  "title_text": "Millikelvin magnetometry up to 30~T using a multi-cross micro-Hall sensor",
  "type": "preprint",
  "updated_at": "2026-11-09T00:20:20Z",
  "url": "https://research.draconitic.com/paper/8xp1aew8wnegv",
  "venue": "arXiv",
  "versions": [
    {
      "doi": "10.1088/1674-1056/aeba69",
      "pid": null,
      "relation": "published-as",
      "title": null,
      "venue": null
    }
  ]
}