Article (Scientific journals)
Sub-femtosecond electron transport in a nanoscale gap
Ludwig, Markus; Aguirregabiria, Garikoitz; Ritzkowsky, Felix et al.
2019In Nature Physics
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Abstract :
[en] 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.
Disciplines :
Physics
Author, co-author :
Ludwig, Markus ;  University of Konstanz, Germany > Department of Physics and Center for Applied Photonics
Aguirregabiria, Garikoitz;  Centro de Física de Materiales, Centro Mixto CSIC-UPV/EHU and Donostia International Physics Center (DIPC), Donostia–San Sebastián, Spain
Ritzkowsky, Felix;  University of Konstanz, Germany. > Department of Physics and Center for Applied Photonics
Rybka, Tobias;  University of Konstanz, Germany. > Department of Physics and Center for Applied Photonics
Marinica, Dana Codruta;  Institut des Sciences Moléculaires d′Orsay – UMR 8214, CNRS–Université Paris Sud, Orsay, France
Aizpurua, Javier;  Centro de Física de Materiales, Centro Mixto CSIC-UPV/EHU and Donostia International Physics Center (DIPC), Donostia–San Sebastián, Spain
Borisov, Andrei G.;  Institut des Sciences Moléculaires d′Orsay – UMR 8214, CNRS–Université Paris Sud, Orsay, France
Leitenstorfer, Alfred;  University of Konstanz, Germany. > Department of Physics and Center for Applied Photonics
Brida, Daniele ;  University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit ; University of Konstanz, D-78457 Konstanz, Germany > Department of Physics and Center for Applied Photonics
External co-authors :
yes
Language :
English
Title :
Sub-femtosecond electron transport in a nanoscale gap
Publication date :
2019
Journal title :
Nature Physics
ISSN :
1745-2481
Publisher :
Nature Publishing Group, London, United Kingdom
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBilu :
since 27 June 2020

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