{
  "id": "1411.6385",
  "version": "v1",
  "published": "2014-11-24T09:00:39.000Z",
  "updated": "2014-11-24T09:00:39.000Z",
  "title": "Magnetoroton modes at sub-Zeeman energies in a filling factor range around 1/3",
  "authors": [
    "Sutirtha Mukherjee",
    "Sudhansu S. Mandal"
  ],
  "comment": "5 pages, 3 figures",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "The nature of the excitations causing the modes at sub-Zeeman energies in a filling factor range around 1/3 first observed more than a decade ago by Dujovne et al. [Phys. Rev. Lett. 90, 036803 (2003)] still remains unresolved. We make a strong case that these modes are due to the \"magnetorotons\" in spinless neutral excitations. By calculating the dispersion of Girvin-MacDonald-Platzman mode using the recently proposed \"unconventional\" ground states for the fractional quantum Hall effect observed at the filling factors $\\nu = 4/11$, 4/13, 5/13, 5/17, 3/8, and 6/17, we show a generic formation of the primary magnetorotons for all these $\\nu$ at very low momenta with energies lower than a typical Zeeman energy in the semiconductor systems. We further propose an experimental criterion to test our theory.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2014-11-24T09:00:39.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "73.43.Lp",
      "71.10.Pm"
    ],
    "keywords": [
      "filling factor range",
      "sub-zeeman energies",
      "magnetoroton modes",
      "fractional quantum hall effect",
      "spinless neutral excitations"
    ],
    "publication": {
      "doi": "10.1103/PhysRevLett.114.156802",
      "journal": "Physical Review Letters",
      "year": 2015,
      "month": "Apr",
      "volume": 114,
      "number": 15,
      "pages": 156802
    },
    "note": {
      "typesetting": "TeX",
      "pages": 5,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2015PhRvL.114o6802M"
    }
  }
}