Piezoacoustic Measurements of Electrons on Helium

ORAL

Abstract

We report on simultaneous low-frequency transport and high-frequency piezoacoustic measurements of electrons on the surface of superfluid helium. By coupling a piezoacoustic surface wave to a nearby two-dimensional electron system we measure the high frequency conductivity of the electron system in a wave-vector selective manner. Additionally, a dynamical piezoelectric standing wave creates a modulated and tunable potential that can be used to simulate a two-dimensional system exhibiting commensurate-incommensurate transitions which can be detected via quasi-dc transport measurements.

*This work is supported by the NSF (Grant no. DMR-1708331).

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Presenters

  • Heejun Byeon

    • Physics and Astronomy, Michigan State Univ

Authors

  • Heejun Byeon

    • Physics and Astronomy, Michigan State Univ

  • Kostyantyn Nasyedkin

    • Physics and Astronomy, Michigan State Univ

  • Reza Loloee

    • Michigan State University
    • Physics and Astronomy, Michigan State Univ
    • Department of Physics and Astronomy, Michigan State Univ

  • Stephen Hemmerle

    • Physics and Astronomy, Michigan State Univ
    • Department of Physics and Astronomy, Michigan State Univ

  • Johannes Pollanen

    • Department of Physics and Astronomy, Michigan State University
    • Physics and Astronomy, Michigan State Univ
    • Department of Physics and Astronomy, Michigan State Univ
    • Michigan State Univ