{
  "id": "1304.5415",
  "version": "v1",
  "published": "2013-04-19T13:37:14.000Z",
  "updated": "2013-04-19T13:37:14.000Z",
  "title": "Effects of Electron-Electron Interactions on Electronic Raman Scattering of Graphite in High Magnetic Fields",
  "authors": [
    "Y. Ma",
    "Y. Kim",
    "N. G. Kalugin",
    "A. Lombardo",
    "A. C. Ferrari",
    "J. Kono",
    "A. Imambekov",
    "D. Smirnov"
  ],
  "comment": "5 pages, 3 figures",
  "journal": "Physical Review B 89, 121402(R) (2014)",
  "doi": "10.1103/PhysRevB.89.121402",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "We report the observation of strongly temperature-dependent, asymmetric spectral lines in electronic Raman scattering spectra of graphite in a high magnetic field up to 45 T applied along the c-axis. The magnetic field quantizes the in-plane motion, while the out-of-plane motion remains free, effectively reducing the system dimension from three to one. Optically created electron-hole pairs interact with, or shake up, the one-dimensional Fermi sea in the lowest Landau subbands. Based on the Tomonaga-Luttinger liquid theory, we show that interaction effects modify the van Hove singularity to the form $(\\omega-\\Delta)^{2\\alpha-1/2}$ at zero temperature. At finite temperature, we predict a thermal broadening factor that increases linearly with the temperature. Our model reproduces the observed temperature-dependent line-shape, determining $\\alpha$ to be $\\sim$0.05 at 40 T.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2013-04-19T13:37:14.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "78.30.Am",
      "71.70.Di",
      "76.40.+b",
      "78.20.Ls"
    ],
    "keywords": [
      "high magnetic field",
      "electronic raman scattering",
      "electron-electron interactions",
      "out-of-plane motion remains free",
      "asymmetric spectral lines"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review B",
      "year": 2014,
      "month": "Mar",
      "volume": 89,
      "number": 12,
      "pages": 121402
    },
    "note": {
      "typesetting": "TeX",
      "pages": 5,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2014PhRvB..89l1402M"
    }
  }
}