{
  "id": "2306.17295",
  "version": "v1",
  "published": "2023-06-29T20:35:19.000Z",
  "updated": "2023-06-29T20:35:19.000Z",
  "title": "Orbital Hall effect and orbital edge states caused by s electrons",
  "authors": [
    "Oliver Busch",
    "Ingrid Mertig",
    "Börge Göbel"
  ],
  "comment": "5 pages, 4 figures",
  "categories": [
    "cond-mat.mes-hall",
    "cond-mat.mtrl-sci",
    "cond-mat.str-el"
  ],
  "abstract": "An orbital current can be generated whenever an object has a translational and rotational degree of freedom. In condensed matter physics, intra-atomic contributions to the transverse orbital transport, labeled orbital Hall effect, rely on propagating wave packets that must consist of hybridized atomic orbitals. However, inter-atomic contributions have to be considered as well because they give rise to a new mechanism for generating orbital currents. As we show, even wave packets consisting purely of s electrons can transport orbital angular momentum if they move on a cycloid trajectory. We introduce the kagome lattice with a single s orbital per atom as the minimal model for the orbital Hall effect and observe the cycloid motion of the electrons in the surface states.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2023-06-29T20:35:19.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "orbital edge states",
      "orbital current",
      "transport orbital angular momentum",
      "wave packets",
      "transverse orbital transport"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 5,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}