Extracting spin-orbit coupling strength using realistic device simulations

ORAL

Abstract

We do realistic device simulations of semiconductor nanowires and calculate the weak antilocalization correction. We match our numerical simulation to magnetoconductance measurements and accurately extract the spin-orbit coupling strength from experiment. Unlike analytic approaches, our approach considers the electrostatic potential, works for arbitrary wire cross sections, and arbitrary finite mean free paths, including the complicated cross over regime where mean free path is comparable to wire width. After verifying our technique against known analytical results, we extract the spin-orbit coupling strength of semiconductor nanowires produced by selective area growth.

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Presenters

  • Georg Winkler

    • Microsoft Corp
    • Microsoft Quantum, Microsoft Station Q, University of California Santa Barbara, Santa Barbara, CA 93106, USA

Authors

  • Bas Nijholt

    • Kavli Institute for Nanoscience, Delft University of Technology, P.O. Box 4056, 2600 GA Delft, The Netherlands

  • Georg Winkler

    • Microsoft Corp
    • Microsoft Quantum, Microsoft Station Q, University of California Santa Barbara, Santa Barbara, CA 93106, USA

  • Jukka Vayrynen

    • University of California, Santa Barbara
    • Microsoft Quantum, Microsoft Station Q, University of California Santa Barbara, Santa Barbara, CA 93106, USA

  • Guanzhong Wang

    • QuTech and Kavli Institute of Nanoscience, Delft University of Technology, 2600 GA Delft, The Netherlands

  • Gijs De Lange

    • Microsoft Quantum Lab Delft, 2628 CJ, Delft, The Netherlands
    • Quantum Lab Delft, Microsoft
    • Applied Physics, Yale University
    • QuTech and Kavli Institute of Nanoscience, Delft University of Technology
    • Microsoft Corp

  • Luca Binci

    • QuTech and Kavli Institute of Nanoscience, Delft University of Technology, 2600 GA Delft, The Netherlands

  • Alberto Bordin

    • QuTech and Kavli Institute of Nanoscience, Delft University of Technology, 2600 GA Delft, The Netherlands

  • Roman Lutchyn

    • Microsoft Quantum, Santa Barbara, CA, USA
    • Microsoft Corp
    • University of California, Santa Barbara
    • Microsoft Quantum, Microsoft Station Q, University of California Santa Barbara, Santa Barbara, CA 93106, USA
    • Station Q, Microsoft Research, Santa Barbara, California 93106-6105, USA