Uniaxial strain effects on Superconducting nano-wires at LaAlO<sub>3</sub>/SrTiO<sub>3</sub> interface

ORAL

Abstract

Oxide interfaces offer new ways to probe superconductivity in reduced spatial dimensions. Using conductive atomic force microscope (c-AFM) lithography [1], conductive nanostructures can be reversibly created at the LaAlO3/SrTiO3 interface, showing superconductivity at sub-Kelvin temperatures. Here we focus on the effects of uniaxial stress on the transport of superconducting quantum wires formed at the LaAlO3/SrTiO3 interface. Preliminary results show that superconductivity is strongly affected by uniaxial strain applied parallel to the nanowire direction, with much less influence for strain applied in the transverse directions. We will discuss the implications of possible electron-pairing mechanisms in SrTiO3.
[1] C. Cen, et al., Nature Materials 7, 298 (2008).

*We acknowledge support from the Vannevar Bush Faculty Fellowship program sponsored by the Basic Research Office of the Assistant Secretary of Defense for Research and Engineering and funded by the Office of Naval Research through grant N00014-15-1-2847.
The work at University of Wisconsin-Madison was supported by the Air Force Office of Scientific Research FA9550-15-1-0334 and the Gordon and Betty Moore Foundation’s EPiQS Initiative, Grant GBMF9065 to Chang-Beom Eom.

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Presenters

  • Xinyi Wu

    • University of Pittsburgh

Authors

  • Xinyi Wu

    • University of Pittsburgh

  • Jianan Li

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

  • Megan K Briggeman

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

  • Joseph A Albro

    • University of Pittsburgh

  • Jungwoo Lee

    • Materials Science and Engineering, University of Wisconsin-Madison
    • University of Wisconsin, Madison
    • Department of Materials Science and Engineering, University of Wisconsin-Madison,, University of Wisconsin
    • University of Wisconsin-Madison
    • University of Wisconsin-Maddison
    • Department of Materials Science and Engineering, University of Wisconsin-Madison

  • Hyungwoo Lee

    • Materials Science and Engineering, University of Wisconsin-Madison
    • University of Wisconsin-Madison
    • University of Wisconsin-Maddison
    • Department of Materials Science and Engineering, University of Wisconsin-Madison

  • Chang-Beom Eom

    • Materials Science and Engineering, University of Wisconsin-Madison
    • University of Wisconsin, Madison
    • Department of Materials Science and Engineering, University of Wisconsin-Maddison
    • Department of Materials Science and Engineering, University of Wisconsin
    • Department of Materials Science Engineering, University of Wisconsin-Madison
    • Department of Materials Science and Engineering, University of Wisconsin-Madison,, University of Wisconsin
    • Material Science and Engineering, University of Wisconsin-Madison
    • University of Wisconsin-Madison
    • University of Wisconsin-Maddison
    • University of Wisconsin - Madison
    • University of Wisconsin Madison
    • Department of Materials Science and Engineering, University of Wisconsin-Madison

  • Patrick R Irvin

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

  • Jeremy Levy

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