Lightwave-controlled electron dynamics in graphene

Heide C, Higuchi T, Ullmann K, Weber HB, Hommelhoff P (2019)

Publication Type: Conference contribution

Publication year: 2019

Pages Range: 05002

Conference Proceedings Title: 205


DOI: 10.1051/epjconf/201920505002

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We demonstrate that currents induced in graphene by ultrashort laser pulses are sensitive to the exact shape of the electric-field waveform. By increasing the field strength, we found a transition of the light–matter interaction from the weak-field to the strong-field regime at around 2 V/nm, where intraband dynamics influence interband transitions. In this strong-field regime, the light-matter interaction can be described by the wavenumber trajectories of electrons in the reciprocal space. For linearly polarized light the electron dynamics are governed by repeated sub-optical-cycle Landau-Zener transitions between the valence- and conduction band, resulting in Landau-Zener-Stuckelberg interference, whereas for circular polarized light this interference is supressed.

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Heide, C., Higuchi, T., Ullmann, K., Weber, H.B., & Hommelhoff, P. (2019). Lightwave-controlled electron dynamics in graphene. In EPJ Web Conf. (Eds.), 205 (pp. 05002).


Heide, Christian, et al. "Lightwave-controlled electron dynamics in graphene." Proceedings of the XXI International Conference on Ultrafast Phenomena 2018 (UP 2018) Ed. EPJ Web Conf., 2019. 05002.

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