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Engineered Chirality of One-Dimensional Nanowires

ORAL

Abstract

Quantum transport in 1D geometries is fascinating in its own right, but it can also be regarded as a building-block for creating and exploring a variety of quantum systems. We have developed a flexible platform for creating 1D nanostructures at the LaAlO3/SrTiO3 interface using a conductive atomic force microscope lithography technique. Straight nanowire segments behave as electron waveguides with subband occupation that can be tuned with a gate and an external magnetic field. We can periodically perturb this waveguide, with 10 nm periodicity, to yield a chiral nanowire which exhibits striking oscillatory transmission as a function of both magnetic field and chemical potential. We discuss these results in terms of an engineered axial in-plane spin-orbit interaction within the spiral electron waveguide. These findings represent an important advance in the ability to design new families of quantum materials with emergent properties, and mark a milestone in the development of a solid-state 1D quantum simulation platform.

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Presenters

  • Megan Briggeman

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

Authors

  • Megan Briggeman

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

  • Jianan Li

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

  • Mengchen Huang

    Department of Physics and Astronomy, University of Pittsburgh, Physics, University of California-Santa Barbara

  • 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

  • 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