{
  "id": "1411.3831",
  "version": "v1",
  "published": "2014-11-14T08:57:14.000Z",
  "updated": "2014-11-14T08:57:14.000Z",
  "title": "Manifestation of axion electrodynamics through magnetic ordering on edges of topological insulator",
  "authors": [
    "Yea-Lee Lee",
    "Hee Chul Park",
    "Jisoon Ihm",
    "Young-Woo Son"
  ],
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "Based on a first-principles approach, we show that in a single crystal of a prototypical topological insulator such as Bi$_2$Se$_3$ the difference in the work function between adjacent surfaces with different crystal-face orientations generates a built-in electric field around facet edges. Owing to the topological magnetoelectric coupling for a given broken time-reversal symmetry in the crystal, the electric field, in turn, forces effective magnetic dipoles to accumulate along the edges, realizing the facet-edge magnetic ordering. We demonstrate that the predicted magnetic ordering which depends only on the work function difference between facets, is in fact a manifestation of the axion electrodynamics in real solids.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2014-11-14T08:57:14.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "magnetic ordering",
      "axion electrodynamics",
      "topological insulator",
      "manifestation",
      "broken time-reversal symmetry"
    ],
    "publication": {
      "doi": "10.1073/pnas.1515664112",
      "journal": "Proceedings of the National Academy of Science",
      "year": 2015,
      "month": "Sep",
      "volume": 112,
      "number": 37,
      "pages": 11514
    },
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 1328339,
      "adsabs": "2015PNAS..11211514L"
    }
  }
}