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- Centre National de la Recherche ScientifiqueFR237 papers
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6 papers · 2 filters
Non-thermal transport of energy driven by photoexcited carriers in switchable solid states of GeTe
R. Gu, T. Perrault, V. Juvé +10
Phase change alloys have seen widespread use from rewritable optical discs to the present day interest in their use in emerging neuromorphic computing architectures. In spite of th…
On the detection of surface spin freezing in iron oxide nanoparticles and its long-term evolution under ambient oxidation
M. Ghoshani, E. H. Sánchez, S. S. Lee +7
Exchange bias effects linked to surface spin freezing (SSF) are commonly found in iron oxide nanoparticles, while signatures of SSF in low-field temperature-dependent magnetization…
3D characterisation of individual grains of coexisting high-pressure H2O ice phases by time-domain Brillouin scattering
Sathyan Sandeep, Théo Thréard, Elton De Lima Savi +6
Time-domain Brillouin scattering uses ultrashort laser pulses to generate coherent acoustic pulses of picoseconds duration in a solid sample and to follow their propagation in orde…
Ultrafast light-induced shear strain probed by time-resolved X-ray diffraction: the model multiferroic BiFeO as a case study
V. Juvé, R. Gu, S. Gable +12
Enabling the light-control of complex systems on ultra-short timescales gives rise to rich physics with promising applications. While crucial, the quantitative determination of bot…
Nondestructive femtosecond laser lithography of Ni nanocavities by controlled thermo-mechanical spallation at the nanoscale
V. V. Temnov, A. Alekhin, A. Samokhvalov +3
We present a new approach to femtosecond direct laser writing lithography to pattern nanocavities in ferromagnetic thin films. To demonstrate the concept we irradiated 300~nm thin…
Resonant thermal energy transfer to magnons in a ferromagnetic nanolayer
Michal Kobecki, Alexey V. Scherbakov, Tetiana L. Linnik +7
Energy harvesting is a modern concept which makes dissipated heat useful by transferring thermal energy to other excitations. Most of the existing principles for energy harvesting…