Creating nano-scale “vias” in LaAlO<sub>3</sub>/SrTiO<sub>3</sub> for integration of nanostructures

ORAL

Abstract

The 2D electron gas (2DEG) at the LaAlO3/SrTiO3 interface can be patterned with nanoscale dimensions using c-AFM lithography [1] and integrated with other 2D materials such as graphene [2]. While the surface of LaAlO3/SrTiO3 is only 1.2 nm from the interface, improved coupling of particles on the surface with the interface requires closer proximity. Here, we discuss methods to create nanoscale holes or “nano vias” in LaAlO3/SrTiO3 with the goal of integrating nanomaterials directly to the interface while also maintaining interfacial conductivity. These nano vias will allow us to study the effect of local coupling between the 2DEG at LaAlO3/SrTiO3 interface and a wide variety of interesting nanomaterials such as colloidal quantum dots or graphene nanoribbons.
[1] Y. Pai, et al., Rep. Prog. Phys. 81, 036503 (2018)
[2] C. Cen, et al., Nature Materials 7, 298 (2008).
[3] Huang, M. et al., APL Mat. 3, 062502 (2015).

*Funding acknowledgement: JL acknowledges a Vannevar Bush Faculty Fellowship (ONR N00014-15-1-2847). The work at U. Wisconsin-Madison was supported by AFOSR 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

  • Carl Wilson

    • Physics and Astronomy, University of Pittsburgh

Authors

  • Carl Wilson

    • Physics and Astronomy, University of Pittsburgh

  • Kitae Eom

    • Materials Science and Engineering, 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

  • Dengyu Yang

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

  • Muqing Yu

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

  • Aditi Nethwewala

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

  • Jung-Woo Yoo

    • Material 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 Ivrin

    • Physics and 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