Reconfigurable Nanoscale Control of the Charge Neutrality Point of graphene

ORAL

Abstract


Nano-engineered graphene devices can exhibit novel and useful electronic and optical properties, many of which depend critically on controlling the chemical potential relative to the charge-neutrality point. Complex-oxide heterostructures enable reconfigurable control of conductive nanostructure, making them an interesting platform for controlling the electronic properties of graphene at nanoscale dimensions. Here we report the fabrication of graphene/LaAlO3/SrTiO3 heterostructures with nanoscale programmable control of the charge-neutrality point. Magnetotransport measurements of superlattice structures show characteristic interference features that can be associated with the electronically patterned interface. We discuss possible new directions based on this highly versatile hybrid platform.

*We gratefully acknowledge the support by N00014-16-1-3152 (JL, BD), and N00014-15-1-2847 (JL). The work at University of Wisconsin-Madison was supported by the National Science Foundation under DMREF Grant No. DMR-1629270, AFOSR FA9550-15-1-0334 and AOARD FA2386-15-1-4046.

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Presenters

  • Qing Guo

    • Univ of Pittsburgh
    • Physics, University of Pittsburgh

Authors

  • Qing Guo

    • Univ of Pittsburgh
    • Physics, University of Pittsburgh

  • Jianan Li

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

  • Lu Chen

    • Univ of Pittsburgh
    • University of Pittsburgh
    • Physics, University of Pittsburgh

  • Mengchen Huang

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

  • Jen-Feng Hsu

    • Univ of Pittsburgh
    • University of Pittsburgh
    • Physics, University of Pittsburgh

  • Jung-Woo Lee

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

  • Hyungwoo Lee

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

  • Chang-Beom Eom

    • University of Wisconsin-Madison
    • Univ of Wisconsin-Madison
    • Univ of Wisconsin, Madison
    • Department of Material Science and Engineering, University of Wisconsin-Madison
    • Matls Sci & Eng, University of Wisconsin-Madison
    • University of Wisconsin
    • Department of Materials Science and Engineering, University of Wisconsin-Madison
    • University of Wisconsin–Madison
    • MS&E, University of Wisconsin
    • Physics, University of Wisconsin–Madison
    • Department of Materials Science and Engineering, University of Wisconsin - Madison

  • Brian D'Urso

    • Montana State University
    • Physics, University of Montana

  • Patrick Irvin

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

  • Jeremy Levy

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