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