Transport properties of non-reciprocal 1D quantum channels at the LaAlO<sub>3</sub>/SrTiO<sub>3</sub> interface

ORAL

Abstract

Abstract: Complex oxide heterostructures exhibit many interesting phenomena [1] that can be controlled on the nanoscale using a conductive atomic force microscope (c-AFM) lithography technique [2]. We create chiral 1D superlattices at the LaAlO3/SrTiO3 interface by adding a periodic modulation to an electron waveguide device. These nanostructures support quantized ballistic transport of electrons and electron pairs, as well as oscillatory transport behavior indicating an engineered spin orbit interaction [3]. These experiments represent a first step toward engineering properties in 1D quantum wires and can be regarded as a building block for more complex quantum systems.

[1] Y-Y. Pai, et al., Reports on Progress in Physics 81 (3), 036503 (2018).
[2] C. Cen, et al., Nature Materials 7, 298 (2008).
[3] A. Annadi, et al., Nano Letter 18, 4473-4481 (2018).

*JL acknowledges a Vannevar Bush Faculty Fellowship (ONR N00014-15-1-2847) and NSF (PHY-1913034). C-BE acknowledges NSF DMREF (DMR-1629270), AFOSR (FA9550-15-1-0334), and AOARD (FA2386-15-1-4046).

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Presenters

  • Yuze Zhang

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

Authors

  • Yuze Zhang

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

  • Tianyi Wang

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

  • Megan Briggeman

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

  • Hyungwoo Lee

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

  • Jungwoo Lee

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