{
  "id": "1801.07377",
  "version": "v1",
  "published": "2018-01-23T02:45:01.000Z",
  "updated": "2018-01-23T02:45:01.000Z",
  "title": "First-order phase transition by a spin-flip potential in BCS superconductivity",
  "authors": [
    "Octavio D. Rodriguez Salmon",
    "Igor Tavares Padilha",
    "Francisco Dinóla Neto"
  ],
  "categories": [
    "cond-mat.stat-mech"
  ],
  "abstract": "A spin-flip potential $V$ is introduced in a BCS Hamiltonian in order to study a possible thermodynamic effect that might be caused by the addition of a magnetic impurity in a superconductor. We found that the competition between the pairing and the spin-flip effect, caused by the interaction between the itinerant electrons and the spin of the impurity, gives rise to a first-order phase transition for certain values of $V$. The phase diagram shows a tricritical point in a frontier line which is topologically similar to those found in the phase diagrams of some Ising-like models.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2018-01-23T02:45:01.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "first-order phase transition",
      "spin-flip potential",
      "bcs superconductivity",
      "phase diagram",
      "frontier line"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}