Dynamics of electron-emission currents in plasmonic gaps induced by strong fields

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2019
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Aguirregabiria, Garikoitz
Marinica, Dana-Codruta
Leitenstorfer, Alfred
Aizpurua, Javier
Borisov, Andrey G.
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The dynamics of ultrafast electron currents triggered by femtosecond laser pulse irradiation of narrow gaps in a plasmonic dimer is studied using quantum mechanical Time-Dependent Density Functional Theory (TDDFT). The electrons are injected into the gap due to the optical field emission from the surfaces of the metal nanoparticles across the junction. Further evolution of the electron currents in the gap is governed by the locally enhanced electric fields. The combination of TDDFT and classical modelling of the electron trajectories allows us to study the quiver motion of the electrons in the gap region as a function of the Carrier Envelope Phase (CEP) of the incident pulse. In particular, we demonstrate the role of the quiver motion in establishing the CEP-sensitive net electric transport between nanoparticles.

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ISO 690AGUIRREGABIRIA, Garikoitz, Dana-Codruta MARINICA, Markus LUDWIG, Daniele BRIDA, Alfred LEITENSTORFER, Javier AIZPURUA, Andrey G. BORISOV, 2019. Dynamics of electron-emission currents in plasmonic gaps induced by strong fields. In: Faraday Discussions. 2019, 214, pp. 147-157. ISSN 1359-6640. eISSN 1364-5498. Available under: doi: 10.1039/c8fd00158h
BibTex
@article{Aguirregabiria2019Dynam-46516,
  year={2019},
  doi={10.1039/c8fd00158h},
  title={Dynamics of electron-emission currents in plasmonic gaps induced by strong fields},
  volume={214},
  issn={1359-6640},
  journal={Faraday Discussions},
  pages={147--157},
  author={Aguirregabiria, Garikoitz and Marinica, Dana-Codruta and Ludwig, Markus and Brida, Daniele and Leitenstorfer, Alfred and Aizpurua, Javier and Borisov, Andrey G.}
}
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