Properties of LaTiO3/SrTiO3 Hall Bars Defined with a Programmable Diamond Scribe

ORAL

Abstract

Hall bars are often used to characterize the electrical and magnetic properties of 2D materials. In some instances, the surfaces are sensitive to application of photoresist, and other techniques for defining a Hall bar shape must be employed. We describe a method for programmatic scribing of microstructures that employ a sharp diamond stylus attached to a computer-controlled robotic arm. Hall bars are etched into LaTiO3/SrTiO3 (LTO/STO) heterostructures, which are subsequently characterized at cryogenic temperatures and magnetic fields.

*JL acknowledges support from NSF PHY-1913034.

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Presenters

  • Maya Bostock

    • University of Pittsburgh

Authors

  • Maya Bostock

    • University of Pittsburgh

  • Jeremy Levy

    • University of Pittsburgh
    • University of Pittsburgh, Department of Physics and Astronomy, Pittsburgh, PA 15260, USA

  • Patrick R Irvin

    • University of Pittsburgh

  • Muqing Yu

    • University of Pittsburgh

  • Aaron S Greenberg

    • University of Pittsburgh

  • Ki-Tae Eom

    • University of Wisconsin - Madison
    • University of Wisconsin-Madison
    • Department of Materials Science and Engineering, University of Wisconsin-Madison, Madison, WI 53706, USA
    • University of Wisconsin Madison

  • Chang-Beom Eom

    • University of Wisconsin - Madison
    • Oxide Laboratory, University of Wisconsin - Madison