|Instituto de Ciencia de Materiales de Madrid|
|Condensed Matter Theory|
|Sigmund Kohler||home | cv | research | publications|
Laser-induced quantum pumping in graphenePablo San-Jose, Elsa Prada, Henning Schomerus, and Sigmund Kohler
Appl. Phys. Lett. 101, 153506 (2012)
We investigate non-adiabatic electron pumping in graphene generated by laser irradiation with linear polariza- tion 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.
[Condensed Matter Theory]
last modified: 25.10.2018 by Sigmund Kohler