{
  "id": "2306.14967",
  "version": "v1",
  "published": "2023-06-26T18:00:22.000Z",
  "updated": "2023-06-26T18:00:22.000Z",
  "title": "Quantum interference of pseudospin-1 fermions",
  "authors": [
    "Adesh Singh",
    "G. Sharma"
  ],
  "comment": "5pages + 23 pages Supplemental Information",
  "categories": [
    "cond-mat.mes-hall",
    "cond-mat.dis-nn",
    "cond-mat.quant-gas",
    "hep-th"
  ],
  "abstract": "Quantum interference is studied in a three-band model of pseudospin-one fermions in the $\\alpha-\\mathcal{T}_3$ lattice. We derive a general formula for magnetoconductivity that predicts a rich crossover between weak localization (WL) and weak antilocalization (WAL) in various scenarios. Recovering the known results for graphene ($\\alpha=0$), we remarkably discover that WAL is notably enhanced when one deviates slightly from the graphene lattice, i.e. when $\\alpha>0$, even though Berry's phase is no longer $\\pi$. This is attributed to the presence of multiple Cooperon channels. Upon further increasing $\\alpha$, a crossover to WL occurs that is maximal for the case of the Dice lattice ($\\alpha=1$). Our work distinctly underscores the role of non-trivial band topology in the localization properties of electrons confined to the two-dimensional $\\alpha-\\mathcal{T}_3$ lattice.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2023-06-26T18:00:22.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "quantum interference",
      "non-trivial band topology",
      "multiple cooperon channels",
      "berrys phase",
      "pseudospin-one fermions"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 5,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}