{
  "annotation_id": "7e953ecc-76f6-4d5c-bd82-297b3695c9f7",
  "date_created": "2026-03-02T18:01:07.970000Z",
  "date_modified": "2026-03-02T18:01:07.970000Z",
  "file_hash": "2c66935dd9881771db0f49ce9888991b37f370d0d6024d74ea4997e0d71f6802",
  "private": false,
  "record": {
    "abstract": "We report on the origin of fragmentation of ultracold atoms observed on a\npermanent magnetic film atom chip. A novel technique is used to characterize\nsmall spatial variations of the magnetic field near the film surface using\nradio frequency spectroscopy of the trapped atoms. Direct observations indicate\nthe fragmentation is due to a corrugation of the magnetic potential caused by\nlong range inhomogeneity in the film magnetization. A model which takes into\naccount two-dimensional variations of the film magnetization is consistent with\nthe observations.",
    "arxiv_id": "physics/0605028",
    "authors": [
      "S. Whitlock",
      "B. V. Hall",
      "T. Roach",
      "R. Anderson",
      "P. Hannaford",
      "A. I. Sidorov"
    ],
    "categories": [
      "physics.atom-ph"
    ],
    "doi": "10.1103/PhysRevA.75.043602",
    "journal_ref": "Phys. Rev. A 75, 043602 (2007)",
    "title": "Effect of Magnetization Inhomogeneity on Magnetic Microtraps for Atoms",
    "url": "https://arxiv.org/abs/physics/0605028"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "b18c526f-19bb-49ce-8605-ad4fd4c92730",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}