Article (Scientific journals)
Active control of ultrafast electron dynamics in plasmonic gaps using an applied bias
Ludwig, Markus; K. Kazansky, Andrey; Aguirregabiria, Garikoitz et al.
2020In Physical Review. B, Condensed Matter
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Abstract :
[en] In this joint experimental and theoretical study we demonstrate coherent control of the optical field emission and electron transport in plasmonic gaps subjected to intense single-cycle laser pulses. Our results show that an external THz field or a minor dc bias, orders of magnitude smaller than the optical bias owing to the laser field, allows one to modulate and direct the electron photocurrents in the gap of a connected nanoantenna operating as an ultrafast nanoscale vacuum diode for lightwave electronics. Using time-dependent density functional theory calculations we elucidate the main physical mechanisms behind the observed effects and show that an applied dc field significantly modifies the optical field emission and quiver motion of photoemitted electrons within the gap. The quantum many-body theory reproduces the measured net electron transport in the experimental device, which allows us to establish a paradigm for controlling nanocircuits at petahertz frequencies
Disciplines :
Physics
Author, co-author :
Ludwig, Markus;  Department of Physics and Center for Applied Photonics, University of Konstanz, D-78457 Konstanz, Germany
K. Kazansky, Andrey;  Donostia International Physics Center DIPC, Paseo Manuel de Lardizabal 4, 20018 Donostia-San Sebastián, Spain ; IKERBASQUE, Basque Foundation for Science, 48013 Bilbao, Spain
Aguirregabiria, Garikoitz;  Material Physics Center CSIC-UPV/EHU, Paseo Manuel de Lardizabal 5, 20018 Donostia-San Sebastián, Spain
Codruta Marinica, Dana;  Université Paris-Saclay, CNRS, Institut des Sciences Moléculaires d’Orsay, 91405 Orsay, France
Falk, Matthias;  Department of Physics and Center for Applied Photonics, University of Konstanz, D-78457 Konstanz, Germany
Leitenstorfer, Alfred;  Department of Physics and Center for Applied Photonics, University of Konstanz, D-78457 Konstanz, Germany
Brida, Daniele ;  University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Physics and Materials Science (DPHYMS) ; Department of Physics and Center for Applied Photonics, University of Konstanz, D-78457 Konstanz, Germany
Aizpurua, Javier;  Donostia International Physics Center DIPC, Paseo Manuel de Lardizabal 4, 20018 Donostia-San Sebastián, Spain ; Material Physics Center CSIC-UPV/EHU, Paseo Manuel de Lardizabal 5, 20018 Donostia-San Sebastián, Spain
G. Borisov, Andrei;  Université Paris-Saclay, CNRS, Institut des Sciences Moléculaires d’Orsay, 91405 Orsay, France
External co-authors :
yes
Language :
English
Title :
Active control of ultrafast electron dynamics in plasmonic gaps using an applied bias
Publication date :
24 June 2020
Journal title :
Physical Review. B, Condensed Matter
ISSN :
1095-3795
Publisher :
American Physical Society, New York, United States - Maryland
Peer reviewed :
Peer Reviewed verified by ORBi
Focus Area :
Physics and Materials Science
Available on ORBilu :
since 28 April 2021

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