Effects of writing parameters on electron transport in sketched single-electron transistors

ORAL

Abstract

Fabrication of single-electron transistors (SETs) and other mesoscopic devices typically requires elaborate nanofabrication techniques. We approach this challenge using a reversible conductive-AFM lithography technique that can locally control the conductivity of the LaAlO3/SrTiO3 interface. We characterize the properties of “sketched” nanostructures as a function of experimentally controllable variables such as writing parameters, back-gate voltage, temperature and magnetic field. Here we focus on the SketchSET geometry [1] which shows discrete addition energies that we can track as a function of source-drain bias and magnetic field. Our findings yield insights into intrinsic interactions between electrons confined within the SET islands.
[1] G. Cheng, et al., Nature Nanotechnology 6, 343 (2011).

*JL acknowledges a Vannevar Bush Faculty Fellowship, funded by ONR (N00014-15-1-2847). C-BE acknowledges NSF DMREF (DMR-1629270), AFOSR (FA9550-15-1-0334).

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Presenters

  • Philip Shenk

    • Univ of Pittsburgh

Authors

  • Philip Shenk

    • Univ of Pittsburgh

  • John Maier

    • Department of Physics, University of Notre Dame

  • Yang Hu

    • Univ of Pittsburgh
    • Department of Physics and Astronomy, University of Pittsburgh

  • Hyungwoo Lee

    • Univ of Wisconsin-Madison
    • Department of Materials Science and Engineering, University of Wisconsin-Madison

  • Jung-Woo Lee

    • Univ of Wisconsin-Madison
    • Materials Science and Engineering, University of Wisconsin-Madison
    • Department of Materials Science and Engineering, University of Wisconsin-Madison
    • University of Wisconsin–Madison
    • Department of Materials Science and Engineering, University of Wisconsin at Madison

  • Chang-Beom Eom

    • Univ of Wisconsin-Madison
    • Materials Science and Engineering, University of Wisconsin-Madison
    • University of Wisconsin–Madison
    • Department of Materials Science and Engineering, University of Wisconsin-Madison
    • Materials Science & Engineering, University of Wisconsin-Madison
    • University of Wisconsin - Madison
    • Department of Materials Science and Engineering, University of Wisconsin - Madison
    • Department of Materials Science and Engineering, University of Wisconsin at Madison

  • Patrick Irvin

    • Univ of Pittsburgh
    • Physics & Astronomy, University of Pittsburgh
    • Department of Physics and Astronomy, University of Pittsburgh
    • Physics and Astronomy, University of Pittsburgh

  • Jeremy Levy

    • Univ of Pittsburgh
    • Physics & Astronomy, University of Pittsburgh
    • Department of Physics and Astronomy, University of Pittsburgh
    • Physics and Astronomy, University of Pittsburgh