{
  "id": "1208.4480",
  "version": "v2",
  "published": "2012-08-22T11:36:55.000Z",
  "updated": "2012-12-28T03:22:34.000Z",
  "title": "Geometric resonances in the magnetoresistance of hexagonal lateral superlattices",
  "authors": [
    "Yuto Kato",
    "Akira Endo",
    "Shingo Katsumoto",
    "Yasuhiro Iye"
  ],
  "comment": "11 pages, 9 figures, minor revision",
  "journal": "Phys. Rev. B 86, 235315 (2012)",
  "doi": "10.1103/PhysRevB.86.235315",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "We have measured magnetoresistance of hexagonal lateral superlattices. We observe three types of oscillations engendered by periodic potential modulation having hexagonal-lattice symmetry: amplitude modulation of the Shubnikov-de Haas oscillations, commensurability oscillations, and the geometric resonances of open orbits generated by Bragg reflections. The latter two reveal the presence of two characteristic periodicities, sqrt{3} a / 2 and a / 2, inherent in a hexagonal lattice with the lattice constant a. The formation of the hexagonal-superlattice minibands manifested by the observation of open orbits marks the first step toward realizing massless Dirac fermions in semiconductor 2DEGs.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2012-12-28T03:22:34.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "73.43.Qt",
      "73.23.-b",
      "73.21.Cd"
    ],
    "keywords": [
      "hexagonal lateral superlattices",
      "geometric resonances",
      "magnetoresistance",
      "shubnikov-de haas oscillations",
      "periodic potential modulation"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review B",
      "year": 2012,
      "month": "Dec",
      "volume": 86,
      "number": 23,
      "pages": 235315
    },
    "note": {
      "typesetting": "TeX",
      "pages": 11,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2012PhRvB..86w5315K"
    }
  }
}