{
  "id": "2312.03364",
  "version": "v1",
  "published": "2023-12-06T09:05:33.000Z",
  "updated": "2023-12-06T09:05:33.000Z",
  "title": "Tuning spinaron and Kondo resonances via quantum confinement",
  "authors": [
    "Markus Aapro",
    "Abraham Kipnis",
    "Jose L. Lado",
    "Shawulienu Kezibelieke",
    "Peter Liljeroth"
  ],
  "categories": [
    "cond-mat.mes-hall",
    "cond-mat.str-el"
  ],
  "abstract": "Controlling zero bias anomalies in magnetic atoms provides a promising strategy to engineer tunable quantum many-body excitations. Here we show how two different quantum impurities featuring spinaron and Kondo excitations can be controlled via quantum confinement engineering by using circular quantum corrals on a Ag(111) surface. In corrals built from both Ag and Co adatoms, the width of the zero bias anomaly in the central Co adatom oscillates as a function of corral radius with a period of half of the Ag(111) surface state wavelength. Parameters extracted for Co/Ag(111) show only small differences in extracted spinaron zero-bias anomaly between corral walls built from Ag or Co adatoms. In quantum corrals occupied with metal-free phthalocyanine, a paradigmatic $S=1/2$ Kondo system, we observe notable changes in the zero bias anomaly lineshape as a function of corral radius. Our results offer insight into many-body Kondo and spinaron resonances where the electronic density is controlled by confinement engineering.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2023-12-06T09:05:33.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "quantum confinement",
      "kondo resonances",
      "tuning spinaron",
      "zero bias anomaly",
      "corral radius"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}