{
  "id": "1608.00111",
  "version": "v1",
  "published": "2016-07-30T12:24:14.000Z",
  "updated": "2016-07-30T12:24:14.000Z",
  "title": "Anisotropic Pauli spin blockade in hole quantum dots",
  "authors": [
    "Matthias Brauns",
    "Joost Ridderbos",
    "Ang Li",
    "Erik P. A. M. Bakkers",
    "Wilfred G. van der Wiel",
    "Floris A. Zwanenburg"
  ],
  "journal": "Physical Review B, 94(2016), 041411(R)",
  "doi": "10.1103/PhysRevB.94.041411",
  "categories": [
    "cond-mat.mes-hall",
    "quant-ph"
  ],
  "abstract": "We present measurements on gate-defined double quantum dots in Ge-Si core-shell nanowires, which we tune to a regime with visible shell filling in both dots. We observe a Pauli spin blockade and can assign the measured leakage current at low magnetic fields to spin-flip cotunneling, for which we measure a strong anisotropy related to an anisotropic g-factor. At higher magnetic fields we see signatures for leakage current caused by spin-orbit coupling between (1,1)-singlet and (2,0)-triplet states. Taking into account these anisotropic spin-flip mechanisms, we can choose the magnetic field direction with the longest spin lifetime for improved spin-orbit qubits.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2016-07-30T12:24:14.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "anisotropic pauli spin blockade",
      "hole quantum dots",
      "leakage current",
      "magnetic field direction",
      "longest spin lifetime"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Phys. Rev. B"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}