{
  "id": "2007.12091",
  "version": "v1",
  "published": "2020-07-23T15:54:11.000Z",
  "updated": "2020-07-23T15:54:11.000Z",
  "title": "Multichannel excitation of the Yu-Shiba-Rusinov states of a molecular spin",
  "authors": [
    "Carmen Rubio-Verdú",
    "Javier Zaldívar",
    "Rok Žitko",
    "Jose Ignacio Pascual"
  ],
  "comment": "6 pages, 5 figures",
  "categories": [
    "cond-mat.mes-hall",
    "cond-mat.supr-con"
  ],
  "abstract": "A magnetic impurity on a superconductor induces Yu-Shiba-Rusinov (YSR) bound states, detected in tunneling spectroscopy as narrow in-gap excitations. Hund's coupling is the energy scale that determines the impurity's magnetic ground state. However, experimental evidence that links the YSR nature with such fundamental intra-atomic exchange remains elusive. We report multichannel YSR states in a many-body molecular spin. We found that a magnetic porphyrin on Pb(111) exhibits two distinct YSR orbital interaction channels with identical intramolecular distribution of their particle-hole asymmetry. Supported by numerical calculations, we show that the YSR asymmetry is caused by orbitals with opposite potential scattering, coupled into a robust, spin-hosting molecular state, which also governs its normal state properties. Our results depict a new scenario for the study of entangled spin systems on superconductors using molecular platforms.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2020-07-23T15:54:11.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "molecular spin",
      "multichannel excitation",
      "yu-shiba-rusinov states",
      "intra-atomic exchange remains elusive",
      "distinct ysr orbital interaction channels"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 6,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}