Effect of Temperature on Conductivity Decay of LaAlO<sub>3</sub>/SrTiO<sub>3</sub> Nanostructures

ORAL

Abstract



The technique of conductive atomic force microscopy (c-AFM) lithography is capable of creating conductive LaAlO3/SrTiO3 (LAO/STO) nanostructures by controlling the charge state of the LAO surface [1]. It is also known that a “water cycle” mediates conductivity at the oxide interface [2] and causes self-erasure of nanostructures. Here we describe experiments in which we repeatedly expose written devices to temperatures above T=300 K and investigate the conductance decay for both 1D and 2D structures.  The properties of LAO/STO nanostructures at elevated temperatures is helpful for understanding the water cycle in more detail, and has practical implications for device applications.

[1] C. Cen et al., Science 323, 1026-1030 (2009).

[2] F. Bi et al., Appl. Phys. Lett. 97, 173110 (2010).

*JL acknowledges support from NSF PHY-1913034. 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

  • Aaron S Greenberg

    • University of Pittsburgh

Authors

  • Aaron S Greenberg

    • University of Pittsburgh

  • Dengyu Yang

    • University of Pittsburgh
    • Pittsburgh Quantum Institute

  • Philip H Shenk

    • University of Pittsburgh

  • Joseph A Albro

    • University of Pittsburgh

  • Muqing Yu

    • 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

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

  • Patrick R Irvin

    • University of Pittsburgh

  • Jeremy Levy

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