Uniaxial strain effects on Superconducting nano-wires at LaAlO3/SrTiO3 interface

Xinyi Wu; Jianan Li; Megan K Briggeman; Joseph A Albro; Jungwoo Lee; Hyungwoo Lee; Chang-Beom Eom; Patrick R Irvin; Jeremy Levy

Uniaxial strain effects on Superconducting nano-wires at LaAlO3/SrTiO3 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).

March 16, 2021, 2:54 PM – March 16, 2021, 3:06 PM

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