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The dynamics of transient electric fields generated by the interaction of high intensity laser pulses with underdense plasmas has been studied experimentally with the proton projection imaging technique. The formation of a charged channel,…

A significant step has been made towards understanding the physics of the transient surface current triggered by ejected electrons during the interaction of a short intense laser pulse with a high-conductivity target. Unlike the commonly…

Plasma Physics · Physics 2020-08-19 A. V. Brantov , A. S. Kuratov , Yu. M. Aliev , V. Yu. Bychenkov

Hot charge carriers in graphene exhibit fascinating physical phenomena, whose understanding has improved greatly over the past decade. They have distinctly different physical properties compared to, for example, hot carriers in conventional…

Mesoscale and Nanoscale Physics · Physics 2021-05-19 Mathieu Massicotte , Giancarlo Soavi , Alessandro Principi , Klaas-Jan Tielrooij

The response of conduction band electrons to a local, pulse-like external excitation is investigated. The charge density wave packets that emerge as a consequence of the excitation leave the interaction region with a speed close to the…

Quantum Physics · Physics 2017-12-06 Istvan Magashegyi , Lorant Zs. Szabo , Peter Foldi

The interplay between the illuminated excitation of carriers and subsequent thermalization and recombination leads to the formation of non-equilibrium distributions for the "hot" carriers and to heating of both electrons, holes and phonons.…

Optics · Physics 2022-04-26 Subhajit Sarkar , Ieng-Wai Un , Yonatan Sivan , Yonatan Dubi

Photocurrent generation is studied in a system composed of a quantum wire with side-coupled quantum rings. The current generation results from the interplay of the particular geometry of the system and the use of circularly polarized…

Mesoscale and Nanoscale Physics · Physics 2009-11-11 Yuriy V. Pershin , Carlo Piermarocchi

Nanoscale molecular-electronic devices and machines are emerging as promising functional elements, naturally flexible and efficient, for next generation technologies. A deeper understanding of carrier dynamics in molecular junctions is…

Mesoscale and Nanoscale Physics · Physics 2018-04-04 K. Beltako , F. Michelini , N. Cavassilas , L. Raymond

We explore theoretically how the coupling to cavity vacuum fields affects the electron transport in quantum conductors due to the counter-rotating-wave terms of light-matter interaction. We determine the quantum conductance in terms of the…

Mesoscale and Nanoscale Physics · Physics 2023-01-31 Geva Arwas , Cristiano Ciuti

We demonstrate carrier-envelope-phase (CEP)-controlled photocurrents in mono-, bi-, and tri-layer MoS$_2$ driven by few-cycle laser pulses. The photocurrent in the two-terminal devices scales quadratically with the field amplitude,…

Mesoscale and Nanoscale Physics · Physics 2025-11-12 Johannes Schmuck , Björn Sinz , Nina Pettinger , Sergey Zherebtsov , Alexander W. Holleitner

Ultrafast control of electron dynamics in solid state systems has recently found particular attention. By increasing the electric field strength of laser pulses, the light-matter interaction in solids might turn from a perturbative into a…

A far-reaching goal of graphene research is exploiting the unique properties of carriers to realize extreme nonclassical electronic transport. Of particular interest is harnessing wavelike carriers to guide and direct them on submicron…

Diamond detectors are attractive for operation in harsh radiation environments because they combine radiation tolerance, fast signal formation, and low leakage current. Realistic detector-response simulations require an accurate description…

We propose a dynamic mechanism for the reversible regulation of photosynthesis in varying light environments. We employ a three-level quantum model to take into account the correlations between charge donors and charge acceptors immediately…

Biological Physics · Physics 2024-11-13 Guang Yang , Gen Tatara

Quantum interference between one- and two-photon absorption pathways allows coherent control of interband transitions in unbiased bulk semiconductors; carrier population, carrier spin polarization, photocurrent injection, and spin current…

Other Condensed Matter · Physics 2007-05-23 R. D. R. Bhat , J. E. Sipe

A unified electrodynamic approach to the guided-wave excitation theory is generalized to the waveguiding structures containing a hypothetical space-dispersive medium with drifting charge carriers possessing simultaneously elastic,…

Classical Physics · Physics 2009-10-31 A. A. Barybin

Photo-induced charge transfer of positive and negative charges across the interface between an ordered organic semiconductor and a polymeric insulator is observed in the field-effect experiments. Immobilization of the transferred charge in…

Materials Science · Physics 2009-11-10 V. Podzorov , M. E. Gershenson

The treatment of the previous paper is extended to molecular wires. Specifically, the effect of electron-vibrational interactions on the electronic transport induced by femtosecond $\omega+2\omega$ laser fields along unbiased molecular…

Quantum Physics · Physics 2009-11-13 Ignacio Franco , Moshe Shapiro , Paul Brumer

Luminescence constitutes a unique source of insight into hot carrier processes in metals, including those in plasmonic nanostructures used for sensing and energy applications. However, being weak in nature, metal luminescence remains poorly…

Metal nanoparticles are excellent light absorbers. The absorption processes create highly excited electron-hole pairs and recently there has been interest in harnessing these hot charge carriers for photocatalysis and solar energy…

Mesoscale and Nanoscale Physics · Physics 2017-06-13 Gregory V. Hartland , Lucas V. Besteiro , Paul Johns , Alexander O. Govorov

The unusual electrical and optical properties of graphene make it a promising candidate for optoelectronic applications. An important, but as yet unexplored aspect is the role of photo-excited hot carriers in charge and energy transport at…

Mesoscale and Nanoscale Physics · Physics 2011-08-18 Dong Sun , Grant Aivazian , Aaron M. Jones , Wang Yao , David Cobden , Xiaodong Xu