{
  "id": "1506.03905",
  "version": "v1",
  "published": "2015-06-12T06:14:12.000Z",
  "updated": "2015-06-12T06:14:12.000Z",
  "title": "Optical investigation of monolayer and bulk tungsten diselenide (WSe$_{2}$) in high magnetic fields",
  "authors": [
    "A. A. Mitioglu",
    "P. Plochocka",
    "Á. Granados del Aguila",
    "P. C. M. Christianen",
    "G. Deligeorgis",
    "S. Anghel",
    "L. Kulyuk",
    "D. K. Maude"
  ],
  "comment": "just accepted in Nano Letters http://pubs.acs.org/doi/abs/10.1021/acs.nanolett.5b00626",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "Optical spectroscopy in high magnetic fields $B\\leq65$ T is used to reveal the very different nature of carriers in monolayer and bulk transition metal dichalcogenides. In monolayer WSe$_{2}$, the exciton emission shifts linearly with the magnetic field and exhibits a splitting which originates from the magnetic field induced valley splitting. The monolayer data can be described using a single particle picture with a Dirac-like Hamiltonian for massive Dirac fermions, with an additional term to phenomenologically include the valley splitting. In contrast, in bulk WSe$_{2}$ where the inversion symmetry is restored, transmission measurements show a distinctly excitonic behavior with absorption to the 1s and 2s states. Magnetic field induces a spin splitting together with a small diamagnetic shift and cyclotron like behavior at high fields, which is best described within the hydrogen model.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2015-06-12T06:14:12.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "high magnetic fields",
      "bulk tungsten diselenide",
      "optical investigation",
      "field induced valley splitting",
      "bulk transition metal dichalcogenides"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}