{
  "id": "1507.08330",
  "version": "v1",
  "published": "2015-07-29T22:15:03.000Z",
  "updated": "2015-07-29T22:15:03.000Z",
  "title": "Manipulating Z2 and Chern topological phases in a single material using periodically driving fields",
  "authors": [
    "Shu-Ting Pi",
    "Sergey Savrasov"
  ],
  "comment": "5 pages, 3 figures, 1 supplementary material (2 pages)",
  "categories": [
    "cond-mat.mes-hall",
    "cond-mat.mtrl-sci"
  ],
  "abstract": "$Z_{2}$ and Chern topological phases such as newly discovered quantum spin Hall and original quantum Hall states hardly both co--exist in a single material due to their contradictory requirement on the time--reversal symmetry (TRS). We show that although the TRS is broken in systems with a periodically driving ac-field, an effective TRS can still be defined provided the ac--field is linearly polarized or certain other conditions are satisfied. The controllable TRS provides us with a route to manipulate $Z_{2} $ and Chern topological phases in a single material by tuning the polarization of the ac--field. To demonstrate the idea, we consider a generic honeycomb lattice model as a benchmark system that is relevant to electronic structures of several monolayered materials. Our calculation shows that not only the transitions between $Z_{2}$ and Chern phases can be induced but also features such as the dispersion of the edge states can be controlled. This opens the possibility of manipulating various topological phases in a single material and can be a promising approach to engineer some new electronic states of matter.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2015-07-29T22:15:03.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "chern topological phases",
      "single material",
      "periodically driving fields",
      "manipulating z2",
      "original quantum hall states"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 5,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}