{
  "annotation_id": "cf342de6-2226-45cf-b7ec-9a6895fa6e1c",
  "date_created": "2026-03-02T18:01:24.832000Z",
  "date_modified": "2026-03-02T18:01:24.832000Z",
  "file_hash": "953a9c6ad440c273d09d645fd461b5977ad7ef339ed0d9c94d920bff5d3c82be",
  "private": false,
  "record": {
    "abstract": "The thermodynamic stability of structural isomers of $\\mathrm{C}_{24}$,\n$\\mathrm{C}_{26}$, $\\mathrm{C}_{28}$ and $\\mathrm{C}_{32}$, including\nfullerenes, is studied using density functional and quantum Monte Carlo\nmethods. The energetic ordering of the different isomers depends sensitively on\nthe treatment of electron correlation. Fixed-node diffusion quantum Monte Carlo\ncalculations predict that a $\\mathrm{C}_{24}$ isomer is the smallest stable\ngraphitic fragment and that the smallest stable fullerenes are the\n$\\mathrm{C}_{26}$ and $\\mathrm{C}_{28}$ clusters with $\\mathrm{C}_{2v}$ and\n$\\mathrm{T}_{d}$ symmetry, respectively. These results support proposals that a\n$\\mathrm{C}_{28}$ solid could be synthesized by cluster deposition.",
    "arxiv_id": "physics/9909037",
    "authors": [
      "P. R. C. Kent",
      "M. D. Towler",
      "R. J. Needs",
      "G. Rajagopal"
    ],
    "categories": [
      "physics.atm-clus",
      "cond-mat"
    ],
    "doi": "10.1103/PhysRevB.62.15394",
    "title": "Carbon clusters near the crossover to fullerene stability",
    "url": "https://arxiv.org/abs/physics/9909037"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "fb700530-a418-40c2-9603-a3200f80363c",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}