{
  "annotation_id": "67f81934-4fa5-4857-8082-eb1c1b3cbc9f",
  "date_created": "2026-03-02T18:00:46.623000Z",
  "date_modified": "2026-03-02T18:00:46.623000Z",
  "file_hash": "8d30773f7bc28e0b5582f76ba41e8663840888c28187083fa04eb11a349e706b",
  "private": false,
  "record": {
    "abstract": "The ground and excited state properties of small helium clusters, 4He_N,\ncontaining nanoscale (~3-10 Angstroms) planar aromatic molecules have been\nstudied with quantum Monte Carlo methods. Ground state structures and energies\nare obtained from importance-sampled, rigid-body diffusion Monte Carlo. Excited\nstate energies due to helium vibrational motion are evaluated using the\nprojection operator, imaginary time spectral evolution technique. We examine\nthe adsorption of N helium atoms (N less than or equal to 24) on a series of\nplanar aromatic molecules (benzene, naphthalene, anthracene, tetracene,\nphthalocyanine). The first layer of helium atoms is well-localized on the\nmolecule surface, and we find well-defined localized excitations due to\nin-plane vibrational motion of helium on the molecule surface. We discuss the\nimplications of these confined excitations for the molecule spectroscopy.",
    "arxiv_id": "physics/0311085",
    "authors": [
      "Patrick Huang",
      "Heather D. Whitley",
      "K. Birgitta Whaley"
    ],
    "categories": [
      "physics.chem-ph",
      "cond-mat",
      "physics.atm-clus"
    ],
    "doi": "10.1023/B:JOLT.0000012565.54363.64",
    "title": "Structure and energetics of helium adsorption on nanosurfaces",
    "url": "https://arxiv.org/abs/physics/0311085"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "c77afa15-6427-4945-a362-53156fb67f21",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}