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).
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Presenters
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Erin Sheridan
University of Pittsburgh, Department of Physics & Astronomy, University of Pittsburgh
Authors
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Erin Sheridan
University of Pittsburgh, Department of Physics & Astronomy, University of Pittsburgh
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Gang Li
Department of Chemistry, University of Nebraska - Lincoln, Department of Chemistry, University of Nebraska-Lincoln
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Mamun Sarker
Department of Chemistry, University of Nebraska-Lincoln
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Shan Hao
Physics and Astronomy, University of Pittsburgh, Department of Physics & Astronomy, University of Pittsburgh, University of Pittsburgh
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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
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Alexander Sinitskii
Department of Chemistry, University of Nebraska - Lincoln, University of Nebraska - Lincoln, Department of Chemistry, University of Nebraska-Lincoln
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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
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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
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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