Cryogenic force microscopy of Sketched LaAlO<sub>3</sub>/SrTiO<sub>3</sub> Nanostructures

ORAL

Abstract


Local probes can provide insight into the electronic properties of 2D oxide interfaces (in particular, LaAlO3/SrTiO3) that are hard to determine using bulk transport methods. Scanning SQUID microscopy has revealed enhanced transport along ferroelastic domain boundaries [1]. Recently, Frenkel et al showed [2] that local pressure applied to the LAO/STO interface can reveal enhanced transport along ferroelastic domain boundaries. We are interested in resolving electron transport in LaAlO3/SrTiO3 nanostructures that are “sketched” [3] using conductive-AFM lithography. We describe experiments performed both at room temperature and at low temperatures (<25 K) using a modified vacuum AFM.
[1] B. Kalisky et al., Nature Materials 12, 1091 (2013).
[2] Y. Frenkel et al., Nature Materials 16, 1203 (2017).
[3] C. Cen et al., Nature Materials 7, 298 (2008).

*JL acknowledges a Vannevar Bush Faculty Fellowship, funded by ONR (N00014-15-1-2847). C-BE acknowledges support from NSF DMREF (DMR-1629270), AFOSR (FA9550-15-1-0334), and AOARD (FA2386-15-1-4046).

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Presenters

  • Joseph Albro

    • Physics and Astronomy, University of Pittsburgh

Authors

  • Joseph Albro

    • Physics and Astronomy, University of Pittsburgh

  • Jessica H Montone

    • Physics, University of Illinois Urbana Champaign
    • Physics and Astronomy, University of Pittsburgh

  • Feng Bi

    • Physics and Astronomy, University of Pittsburgh

  • Mengchen Huang

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

  • Jung-Woo Lee

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

  • Hyungwoo Lee

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

  • Chang-Beom Eom

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

  • Patrick Irvin

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

  • Jeremy Levy

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