2013/08/01 by P. Olbrich, Olbrich, Peter, C. Drexler +10
Engineering · Materials Science · Physics and Astronomy · #FOS: Physical sciences #Graphene research and applications #Mesoscale and Nanoscale Physics (cond-mat.mes-hall) #Plasmonic and Surface Plasmon Research #Semiconductor Quantum Structures and Devices
paper · pdf · doi:10.48550/arxiv.1308.0123
openalex publication_date 2013/08/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We report on the observation of the reststrahl band assisted photocurrents in epitaxial graphene on SiC excited by infrared radiation. The peculiar spectral dependence for frequencies lying within the reststrahl band of the SiC substrate provides a direct and noninvasive way to probe the electric field magnitude at atomic distances from the material's surface. Furthermore our results reveal that nonlinear optical and optoelectronic phenomena in 2D crystals and other atomic scale structures can be giantly enhanced by a proper combination of the spectral range and substrate material.