Sub-femtosecond electron transport in a nanoscale gap

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2020
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Aguirregabiria, Garikoitz
Marinica, Dana Codruta
Aizpurua, Javier
Borisov, Andrei G.
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Nature Physics. Springer Science and Business Media. 2020, 16(3), pp. 341-345. ISSN 1745-2473. eISSN 1745-2481. Available under: doi: 10.1038/s41567-019-0745-8
Zusammenfassung

The strong fields associated with few-cycle pulses can drive highly nonlinear phenomena, allowing the direct control of electrons in condensed matter systems. In this context, by employing near-infrared single-cycle pulse pairs, we measure interferometric autocorrelations of the ultrafast currents induced by optical field emission at the nanogap of a single plasmonic nanocircuit. The dynamics of this ultrafast electron nanotransport depends on the precise temporal field profile of the optical driving pulse. Current autocorrelations are acquired with sub-femtosecond temporal resolution as a function of both pulse delay and absolute carrier-envelope phase. Quantitative modelling of the experiments enables us to monitor the spatiotemporal evolution of the electron density and currents induced in the system and to elucidate the physics underlying the electron transfer driven by strong optical fields in plasmonic gaps. Specifically, we clarify the interplay between the carrier-envelope phase of the driving pulse, plasmonic resonance and quiver motion.

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ISO 690LUDWIG, Markus, Garikoitz AGUIRREGABIRIA, Felix RITZKOWSKY, Tobias RYBKA, Dana Codruta MARINICA, Javier AIZPURUA, Andrei G. BORISOV, Alfred LEITENSTORFER, Daniele BRIDA, 2020. Sub-femtosecond electron transport in a nanoscale gap. In: Nature Physics. Springer Science and Business Media. 2020, 16(3), pp. 341-345. ISSN 1745-2473. eISSN 1745-2481. Available under: doi: 10.1038/s41567-019-0745-8
BibTex
@article{Ludwig2020-03Subfe-48184,
  year={2020},
  doi={10.1038/s41567-019-0745-8},
  title={Sub-femtosecond electron transport in a nanoscale gap},
  number={3},
  volume={16},
  issn={1745-2473},
  journal={Nature Physics},
  pages={341--345},
  author={Ludwig, Markus and Aguirregabiria, Garikoitz and Ritzkowsky, Felix and Rybka, Tobias and Marinica, Dana Codruta and Aizpurua, Javier and Borisov, Andrei G. and Leitenstorfer, Alfred and Brida, Daniele}
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