{
  "id": "1611.05127",
  "version": "v1",
  "published": "2016-11-16T02:59:05.000Z",
  "updated": "2016-11-16T02:59:05.000Z",
  "title": "Dissipationless transport of electrons and Cooper pairs in an electron waveguide",
  "authors": [
    "Anil Annadi",
    "Shicheng Lu",
    "Hyungwoo Lee",
    "Jung-Woo Lee",
    "Guanglei Cheng",
    "Anthony Tylan-Tyler",
    "Megan Briggeman",
    "Michelle Tomczyk",
    "Mengchen Huang",
    "David Pekker",
    "Chang-Beom Eom",
    "Patrick Irvin",
    "Jeremy Levy"
  ],
  "comment": "31 pages, 11 figures",
  "categories": [
    "cond-mat.mes-hall",
    "cond-mat.mtrl-sci",
    "cond-mat.str-el",
    "cond-mat.supr-con",
    "quant-ph"
  ],
  "abstract": "Electrons undergo profound changes in their behavior when constrained to move along a single axis. Theories of one-dimensional (1D) transport of interacting electron systems depend crucially on the sign of the electron-electron interaction. To date, clean 1D electron transport has only been reported in systems with repulsive interactions; SrTiO3-based heterointerfaces exhibit superconducting behavior with attractive interactions that are manifested far outside the superconducting regime. However, the relatively low mobilities of two-dimensional (2D) complex-oxide interfaces appear to preclude ballistic transport in 1D. Here we show that nearly ideal 1D electron waveguides exhibiting ballistic transport of electrons and non-superconducting Cooper pairs can be formed at the interface between the two band insulators LaAlO3 and SrTiO3. Full quantization of conductance is observed for micrometer-length devices, establishing that electron transport takes place with negligible dissipation or scattering. The electron waveguides possess gate and magnetic-field selectable spin and charge degrees of freedom and can be tuned to the one-dimensional limit of a single quantum channel. These complex-oxide-based waveguides provide insights into quantum transport in the extreme 1D limit, in a regime in which electrons have a mutual attraction for one another. The selectable spin and subband quantum numbers of these electron waveguides may be useful for quantum simulation, quantum information processing, spintronics, and sensing.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2016-11-16T02:59:05.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "cooper pairs",
      "dissipationless transport",
      "waveguides exhibiting ballistic transport",
      "ideal 1d electron waveguides",
      "1d electron waveguides exhibiting ballistic"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 31,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}