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arXiv · 2103.07346

Gate-Tunable Optical Extinction of Graphene Nanoribbon Nanoclusters

Erin Sheridan·Gang Li·Mamun Sarker·Shan Hao·Ki-Tae Eom·Chang-Beom Eom·Alexander Sinitskii·Patrick Irvin·Jeremy Levy
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Abstract

We investigate the optical response of graphene nanoribbons (GNRs) using the broadband nonlinear generation and detection capabilities of nanoscale junctions created at the LaAlO$_3$/SrTiO$_3$ interface. GNR nanoclusters measured to be as small as 1-2 GNRs in size are deposited on the LaAlO$_3$ surface with an atomic force microscope tip. Time-resolved nonlinear optical probes of GNR nanoclusters reveal a strong, gate-tunable second and third harmonic response, as well as strong extinction of visible to near-infrared (VIS-NIR) light at distinct wavelengths, similar to previous reports with graphene.

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Erin Sheridan, Gang Li, Mamun Sarker, Shan Hao, Ki-Tae Eom, Chang-Beom Eom, Alexander Sinitskii, Patrick Irvin, Jeremy Levy. 2021-03-12. Gate-Tunable Optical Extinction of Graphene Nanoribbon Nanoclusters. https://doi.org/10.1063/5.0048795

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