| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Zhang, Heng
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (15/15 displayed)
- 2024Strong Substrate Influence on Atomic Structure and Properties of Epitaxial VO 2 Thin Filmscitations
- 2024Strong substrate influence on atomic structure and properties of epitaxial VO2 thin filmscitations
- 2023Strong substrate influence on atomic structure and properties of epitaxial VO2 thin filmscitations
- 2023Effects of Intermixing in Sb2Te3/Ge1+xTe Multilayers on the Thermoelectric Power Factorcitations
- 2023Dislocations and a domains coupling in PbTiO3 thin filmscitations
- 2023N=8 Armchair Graphene Nanoribbons: Solution Synthesis and High Charge Carrier Mobility**
- 2023N=8 armchair graphene nanoribbonscitations
- 2022Nanostructure and thermal power of highly-textured and single-crystal-like Bi2Te3 thin filmscitations
- 2022Nanostructure and thermal power of highly-textured and single-crystal-like Bi2Te3 thin filmscitations
- 2021Pulsed laser deposited stoichiometric GaSb films for optoelectronic and phase change memory applicationscitations
- 2021Pulsed laser deposited stoichiometric GaSb films for optoelectronic and phase change memory applicationscitations
- 2020Differences in Sb2Te3 growth by pulsed laser and sputter depositioncitations
- 2020Frequency-domain study of nonthermal gigahertz phonons reveals Fano coupling to charge carrierscitations
- 2019Fluorine‐Free Noble Salt Anion for High‐Performance All‐Solid‐State Lithium–Sulfur Batteriescitations
- 2017Vibrational spectroscopic studies combined with viscosity analysis and VTF calculation for hybrid polymer electrolytescitations
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article
Frequency-domain study of nonthermal gigahertz phonons reveals Fano coupling to charge carriers
Abstract
Telecommunication devices exploit hypersonic gigahertz acoustic phonons to mediate signal processing with microwave radiation, and charge carriers to operate various microelectronic components. Potential interactions of hypersound with charge carriers can be revealed through frequency- and momentum-resolved studies of acoustic phonons in photoexcited semiconductors. Here, we present an all-optical method for excitation and frequency-, momentum-, and space-resolved detection of gigahertz acoustic waves in a spatially confined model semiconductor. Lamb waves are excited in a bare silicon membrane using femtosecond optical pulses and detected with frequency-domain micro-Brillouin light spectroscopy. The population of photoexcited gigahertz phonons displays a hundredfold enhancement as compared with thermal equilibrium. The phonon spectra reveal Stokes–anti-Stokes asymmetry due to propagation, and strongly asymmetric Fano resonances due to coupling between the electron-hole plasma and the photoexcited phonons. This work lays the foundation for studying hypersonic signals in nonequilibrium conditions and, more generally, phonon-dependent phenomena in photoexcited nanostructures.</jats:p>