{
  "id": "1806.10356",
  "version": "v1",
  "published": "2018-06-27T09:10:10.000Z",
  "updated": "2018-06-27T09:10:10.000Z",
  "title": "Spin-splitting induced in a superconductor by an antiferromagnetic insulator",
  "authors": [
    "Akashdeep Kamra",
    "Ali Rezaei",
    "Wolfgang Belzig"
  ],
  "categories": [
    "cond-mat.mes-hall",
    "cond-mat.mtrl-sci",
    "cond-mat.supr-con"
  ],
  "abstract": "Inspired by recent feats in exchange coupling antiferromagnets to an adjacent material, we demonstrate the possibility of employing them for inducing spin-splitting in a superconductor, thereby avoiding the detrimental, parasitic effects of ferromagnets employed to this end. We derive the Gor'kov equation for the matrix Green's function in the superconducting layer, considering a microscopic model for its disordered interface with a two-sublattice magnetic insulator. We find that an antiferromagnetic insulator with effectively uncompensated interface induces a large, disorder-resistant spin-splitting in the adjacent superconductor. In addition, we find contributions to the self-energy stemming from the interfacial disorder. Within our model, these mimic impurity and spin-flip scattering, while another breaks the symmetries in particle-hole and spin spaces. The latter contribution, however, drops out in the quasi-classical approximation and thus, does not significantly affect the superconducting state.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2018-06-27T09:10:10.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "antiferromagnetic insulator",
      "spin-splitting",
      "matrix greens function",
      "two-sublattice magnetic insulator",
      "parasitic effects"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}