{
  "id": "1607.01667",
  "version": "v1",
  "published": "2016-07-06T15:20:04.000Z",
  "updated": "2016-07-06T15:20:04.000Z",
  "title": "Anomalous screening in two-dimensional materials with an extremum ring in the dispersion law",
  "authors": [
    "Eugene B. Kolomeisky",
    "Joseph P. Straley"
  ],
  "comment": "4+ pages, 1 figure",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "A variety of two-dimensional materials possess a band structure with an energy extremal ridge along a ring in momentum space. Examples are biased bilayer graphene, and surfaces and interfaces with a Rashba spin-orbit interaction where at low doping the carriers fill an annulus. This topological feature causes an anomalous screening behavior, which we study using the Thomas-Fermi theory. Specifically, reducing the doping is predicted to enhance the linear screening response, while at zero doping the size of the screening cloud surrounding a Coulomb impurity is found to increase as the cube root of the impurity charge.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2016-07-06T15:20:04.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "dispersion law",
      "anomalous screening",
      "extremum ring",
      "energy extremal ridge",
      "two-dimensional materials possess"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}