Laser-induced quantum pumping in graphene

San Jose, Pablo and Prada, Elsa and Schomerus, Henning and Kohler, Sigmund (2012) Laser-induced quantum pumping in graphene. Applied Physics Letters, 101 (15). ISSN 0003-6951

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We investigate non-adiabatic electron pumping in graphene generated by laser irradiation with linear polarization parallel or perpendicular to the transport direction. Transport is dominated by the spatially asymmetric excitation of electrons from evanescent into propagating modes. For a laser with parallel polarization, the pumping response exhibits a subharmonic resonant enhancement which directly probes the Fermi energy; no such enhancement occurs for perpendicular polarization. The resonance mechanism relies on the chirality of charge carriers in graphene.

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Journal Article
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Applied Physics Letters
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02 Jan 2013 16:22
Last Modified:
21 Nov 2022 23:14