{
  "id": "1808.09421",
  "version": "v1",
  "published": "2018-08-24T19:09:47.000Z",
  "updated": "2018-08-24T19:09:47.000Z",
  "title": "Quantum magnetotransport in a bilayer MoS2: influence of a perpendicular electric field",
  "authors": [
    "M. Zubair",
    "M. Tahir",
    "P. Vasilopoulos",
    "K. Sabeeh"
  ],
  "comment": "14 figures 25 pages",
  "journal": "Received 14 April 2017; published 7 July 2017",
  "doi": "10.1103/PhysRevB.96.045405",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "We first derive the energy dispersion of bilayer MoS$_{2}$ in the presence of a perpendicular electric field $E_z$. We show that the band gap and layer splitting can be controlled by the field $E_z$. Away from the $k$ point, the intrinsic SOC splitting increases in the conduction band but is weakly affected in the valence band. We then analyze the band structure in the presence of a perpendicular magnetic field $B$ and the field $E_z$, including spin and valley Zeeman terms, and evaluate the Hall and longitudinal conductivities. We discuss the numerical results as functions of the fields $B$ and $E_z$ for finite temperatures. The field $B$ gives rise to a significant spin splitting in the conduction band, to a beating in the Shubnikov-de Haas (SdH) oscillations when it's weak, and to their splitting when it's strong. The Zeeman terms and $E_{z}$ suppress the beating and change the positions of the beating nodes of the SdH oscillations at low $B$ fields and enhance their splitting at high $B$ fields. Similar beating patterns are observed in the spin and valley polarizations at low $B$ fields. Interestingly, a $90\\%$ spin polarization and a $100\\%$ square-wave-shaped valley polarization are observed at high $B$ fields. The Hall-plateau sequence depends on $E_z$. These findings may be pertinent to future spintronic and valleytronic devices.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2018-08-24T19:09:47.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "perpendicular electric field",
      "bilayer mos2",
      "quantum magnetotransport",
      "valley polarization",
      "conduction band"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Phys. Rev. B"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 25,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}