Superconductivity at the LaAlO<sub>3</sub>/SrTiO<sub>3</sub> 1D Zigzag Nanowires

ORAL

Abstract

LaAlO3/SrTiO3 exhibits electron pairing far outside of the superconducting state [1]. The superconducting state of LaAlO3/SrTiO3 also exhibits an intrinsic 1D nature [2] which has been linked to ferroelastic domain structure in the SrTiO3. We further explore the role of ferroelastic domain patterns on superconductivity by creating a series of “zig-zag” nanowire structures. We find that straight nanowires are comparatively more resistive, both in their normal and superconducting state, than channels that have a zig-zag structure. We discuss possible interplay between the charge degree of freedom and the structural domains and employ state-of-the-art phase-field modeling to simulate the relevant domain morphologies.

[1] G Cheng et al., Nature 521, 196 (2015)
[2] Y-Y. Pai et al., Physical Review Letters 120 (14), 147001 (2018).
[3] Y-Y. Pai et al., Reports on Progress in Physics 81 (3), 036503 (2018).

*JL acknowledges support from a Vannevar Bush Faculty Fellowship (N00014-15-1-2847). C-BE acknowledges DOE Office of Science, Office of Basic Energy Sciences (DE-FG02-06ER46327).

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Presenters

  • Yun-Yi Pai

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

Authors

  • Yun-Yi Pai

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

  • Megan Briggeman

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

  • Hyungwoo Lee

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

  • Jung-Woo Lee

    • Univ of Wisconsin-Madison
    • Materials Science and Engineering, University of Wisconsin-Madison
    • Department of Materials Science and Engineering, University of Wisconsin-Madison
    • University of Wisconsin–Madison
    • Department of Materials Science and Engineering, University of Wisconsin at Madison

  • Xiaoxing Cheng

    • Department of Materials Science and Engineering, Pennsylvania State University

  • Muqing Yu

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

  • Mengchen Huang

    • Department of Physics and Astronomy, University of Pittsburgh
    • Physics, University of California-Santa Barbara

  • Jianan Li

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

  • Chang-Beom Eom

    • Univ of Wisconsin-Madison
    • Materials Science and Engineering, University of Wisconsin-Madison
    • University of Wisconsin–Madison
    • Department of Materials Science and Engineering, University of Wisconsin-Madison
    • Materials Science & Engineering, University of Wisconsin-Madison
    • University of Wisconsin - Madison
    • Department of Materials Science and Engineering, University of Wisconsin - Madison
    • Department of Materials Science and Engineering, University of Wisconsin at Madison

  • Long Q. Chen

    • Department of Materials Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, USA
    • Pennsylvania State University
    • Department of Materials Science and Engineering, Pennsylvania State University

  • Patrick Irvin

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

  • Jeremy Levy

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