{
  "id": "1210.5823",
  "version": "v1",
  "published": "2012-10-22T07:55:57.000Z",
  "updated": "2012-10-22T07:55:57.000Z",
  "title": "Local and Tunable Geometric Phase of Dirac Fermions in a Topological Junction",
  "authors": [
    "Sang-Jun Choi",
    "Sunghun Park",
    "H. -S. Sim"
  ],
  "comment": "4pages, 4figures",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "We discover a new type of geometric phase of Dirac fermions in solids, which is an electronic analogue of the Pancharatnam phase of polarized light. The geometric phase occurs in a local and nonadiabatic scattering event of Dirac fermions at a junction, unveiling topological aspects of scattering of chiral particles, and it is experimentally tunable to an arbitrary value. It provides a unique approach of detecting the topological order of the insulator in a metal-insulator junction of Dirac fermions, establishing new bulk-edge correspondence. The geometric phase also modifies the fundamental quantization rule of Dirac fermions, suggesting topological devices with nontrivial charge and spin transport such as a topological wave guide and a topological transistor.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2012-10-22T07:55:57.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "73.23.-b",
      "03.65.Vf",
      "72.80.Vp",
      "73.20.-r"
    ],
    "keywords": [
      "dirac fermions",
      "tunable geometric phase",
      "topological junction",
      "fundamental quantization rule",
      "geometric phase occurs"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "doi": "10.1103/PhysRevB.87.165420",
      "journal": "Physical Review B",
      "year": 2013,
      "month": "Apr",
      "volume": 87,
      "number": 16,
      "pages": 165420
    },
    "note": {
      "typesetting": "TeX",
      "pages": 4,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2013PhRvB..87p5420C"
    }
  }
}