Sub-femtosecond electron transport in a nanoscale gap

Ludwig, Markus; Aguirregabiria, Garikoitz; Ritzkowsky, Felix; Rybka, Tobias; Marinica, Dana Codruta; Aizpurua, Javier; Borisov, Andrei G.; Leitenstorfer, Alfred; Brida, Daniele

doi:10.1038/s41567-019-0745-8

Reference : Sub-femtosecond electron transport in a nanoscale gap


	Document type :	Scientific journals : Article
	Discipline(s) :	Physical, chemical, mathematical & earth Sciences : Physics
	To cite this reference:	http://hdl.handle.net/10993/43581

Title :	Sub-femtosecond electron transport in a nanoscale gap
Language :	English
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]
Publication date :	2019
Journal title :	Nature Physics
Publisher :	Nature Publishing Group
Peer reviewed :	Yes (verified by ORBi^lu)
ISSN :	1745-2473
e-ISSN :	1745-2481
City :	London
Country :	United Kingdom
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.
Permalink :	http://hdl.handle.net/10993/43581
DOI :	10.1038/s41567-019-0745-8

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