Nonlinear Optical Spectroscopy of Graphene Nanoribbons

ORAL

Abstract



We investigate the optical response of graphene nanoribbons (GNRs) using the broadband nonlinear generation and detection capabilities of nanoscale junctions created at the LaAlO3/SrTiO3 interface [1]. Using the large non-resonant third-order nonlinear susceptibility in STO, strong difference frequency mixing occurs when the junction is biased, leading to an induced polarization that can also be detected at the junction [2,3]. Here we discuss an “inkwell” method we developed to deposit GNRs on the LAO surface with an atomic force microscope tip. We also review the results of experiments in which we interrogate few-GNR clusters with LAO/STO nanoscale junctions. Results show nearly 100% extinction of VIS-NIR light in the GNR clusters, agreeing with previous results on graphene [4].
[1] C. Cen, et al., Nature Mat 7, 298 (2008).
[2] Y. Ma, et al., Nano Lett 13, 2884 (2013).
[3] L. Chen, et al., Light: Science & Appl. 8, 24 (2019).
[4] E. Sheridan, et al., Nano Lett 20, 10 (2020).

*ES acknowledges support from NSF GRFP (1747452). JL acknowledges a Vannevar Bush Faculty Fellowship (ONR N00014-15-1-2847) and ONR N00014-20-1-2481 . The work at UW Madison was supported by the 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

  • Erin Sheridan

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

Authors

  • Erin Sheridan

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

  • Gang Li

    • Department of Chemistry, University of Nebraska - Lincoln
    • Department of Chemistry, University of Nebraska-Lincoln

  • Mamun Sarker

    • Department of Chemistry, University of Nebraska-Lincoln

  • Shan Hao

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

  • Alexander Sinitskii

    • Department of Chemistry, University of Nebraska - Lincoln
    • University of Nebraska - Lincoln
    • Department of Chemistry, University of Nebraska-Lincoln

  • 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 R Irvin

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