{
  "id": "2401.07703",
  "version": "v1",
  "published": "2024-01-15T14:20:05.000Z",
  "updated": "2024-01-15T14:20:05.000Z",
  "title": "Polaron-induced changes in moiré exciton propagation in twisted van der Waals heterostructures",
  "authors": [
    "Willy Knorr",
    "Samuel Brem",
    "Giuseppe Meneghini",
    "Ermin Malic"
  ],
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "Twisted transition metal dichalcogenides (TMDs) present an intriguing platform for exploring excitons and their transport properties. By introducing a twist angle, a moir\\'e superlattice forms, providing a spatially dependent exciton energy landscape. Based on a microscopic many-particle theory, we investigate in this work polaron-induced changes in exciton transport properties in the MoSe$_2$/WSe$_2$ heterostructure. We demonstrate that polaron formation and the associated enhancement of moir\\'e excitonic mass lead to a significant band flattening. As a result, the hopping rate and the propagation velocity undergo noticeable temperature and twist-angle dependent changes. We predict a reduction of the hopping strength ranging from 80% at a twist angle of 1$^\\circ$ to 30% at 3$^\\circ$ at room temperature. The provided microscopic insights into the spatio-temporal exciton dynamics in presence of a moir\\'e potential further deepens our understanding of the intriguing moir\\'e exciton physics.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2024-01-15T14:20:05.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "twisted van der waals heterostructures",
      "polaron-induced changes",
      "exciton propagation",
      "dependent exciton energy landscape",
      "velocity undergo noticeable temperature"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}