{
  "id": "cond-mat/0607574",
  "version": "v3",
  "published": "2006-07-24T07:43:32.000Z",
  "updated": "2007-02-09T16:52:40.000Z",
  "title": "Metal-insulator transition in Hubbard-like models with random hopping",
  "authors": [
    "Matthew S. Foster",
    "Andreas W. W. Ludwig"
  ],
  "comment": "5 pages, 1 figure. v2: Corrected simple algebraic error in Eq. (10b). The metal-insulator transition is now predicted to be first order. v3: References updated, published version",
  "journal": "Phys. Rev. B 74, 241102(R) (2006)",
  "doi": "10.1103/PhysRevB.74.241102",
  "categories": [
    "cond-mat.dis-nn"
  ],
  "abstract": "An instability of a diffusive Fermi liquid, indicative of a metal-insulator transition (expected to be of first order), arising solely from the competition between quenched disorder and short-ranged interparticle interactions is identified in Hubbard-like models for spinless fermions, subject to (complex) random hopping at half-filling on bipartite lattices. The instability, found within a Finkel'stein Non-Linear Sigma Model treatment in d = (2 + epsilon) > 2 dimensions, originates from an underlying particle-hole like (so-called \"chiral\") symmetry, shared by both disorder and interactions. In the clean, interacting Fermi liquid this symmetry is responsible for the (completely different) \"nesting\" instability.",
  "revisions": [
    {
      "version": "v3",
      "updated": "2007-02-09T16:52:40.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "metal-insulator transition",
      "hubbard-like models",
      "random hopping",
      "finkeltein non-linear sigma model treatment",
      "instability"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Phys. Rev. B"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 5,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}