211 citations · 541 across the 15 of their papers we have counts for
15 papers
Probing Gigahertz Coherent Acoustic Phonons in TiO Mesoporous Thin Films
E. R. Cardozo de Oliveira, C. Xiang, M. Esmann +7
Ultrahigh-frequency acoustic-phonon resonators usually require atomically flat interfaces to avoid phonon scattering and dephasing, leading to expensive fabrication processes, such…
Single-crystal elastic moduli, anisotropy and the B1-B2 phase transition of NaCl at high pressures: Experiment vs. ab-initio calculations
Feng Xu, Laurent Belliard, Chenhui Li +5
Single-crystal elastic moduli, Cij, and the B1-B2 phase transition of NaCl were investigated experimentally, using time-domain Brillouin scattering (TDBS), and theoretically, via d…
Elastic properties assessment in the multiferroic BiFeO3 by pump and probe method
Pierre Hemme, Philippe Djemia, Pauline Rovillain +8
We have performed elasticity measurements in the bulk multiferroic BiFeO3 (BFO) using acoustical pump and probe spectroscopy. The sound velocities of the (quasi)-longitudinal and o…
Mesoporous Thin-Films for Acoustic Devices in the Gigahertz Range
N. Lopez-Abdala, M. Esmann, M. C. Fuertes +7
The coherent manipulation of acoustic waves on the nanoscale usually requires multilayers with thicknesses and interface roughness defined down to the atomic monolayer. This result…
High spectral resolution of GaAs/AlAs phononic cavities by subharmonic resonant pump-probe excitation
Camille Lagoin, Bernard Perrin, Paola Atkinson +1
We present here precise measurement of the resonance frequency, lifetime and shape of confined acoustic modes in the tens of GHz regime in GaAs/AlAs superlattice planar and micropi…
Breakdown of Herring's processes in cubic semiconductors for sub-terahertz longitudinal acoustic phonons
Maxime Markov, Jelena Sjakste, Nathalie Vast +3
In the present work we explain the anomalous behavior of the attenuation of the longitudinal acoustic phonon in GaAs as a function of the phonon energy in the sub-THz domain. T…
Spatio-Temporal Imaging of the Acoustic Field Emitted by a Single Copper Nanowire Copper Nanowires Fabrication
Cyril Jean, Laurent Belliard, Thomas W. Cornelius +5
The monochromatic and geometrically anisotropic acoustic field generated by 400 nm and 120 nm diameter copper nanowires simply dropped on a 10 m silicon membrane is investigated…
Acoustic confinement in superlattice cavities
Daniel Garcia-Sanchez, Samuel Déleglise, Jean-Louis Thomas +3
The large coupling rate between the acoustic and optical fields confined in GaAs/AlAs superlattice cavities makes them appealing systems for cavity optomechanics. We have developed…
Backward Propagating Acoustic Waves in Single Gold Nanobeams
Cyril Jean, Laurent Belliard, Loïc Becerra +1
Femtosecond pump-probe spectroscopy has been carried out on suspended gold nanostructures with a rectangular cross section lithographed on a silicon substrate. With a thickness fix…
Direct Observation of Propagating Gigahertz Coherent Guided Acoustic Phonons in Free Standing Single Copper Nanowires
Cyril Jean, Laurent Belliard, Thomas W. Cornelius +5
We report on gigahertz acoustic phonon waveguiding in free-standing single copper nanowires studied by femtosecond transient reflectivity measurements. The results are discussed on…
Direct measurement of coherent subterahertz acoustic phonons mean free path in GaAs
Romain Legrand, Agnès Huynh, Bernard Jusserand +2
Phonon mean free path is generally inferred from the measurement of thermal conductivity and we are still lacking precise information on this quantity. Recent advances in the field…
Effect of picosecond strain pulses on thin layers of the ferromagnetic semiconductor (Ga,Mn)(As,P)
L. Thevenard, E. Peronne, C. Gourdon +6
The effect of picosecond acoustic strain pulses (ps-ASP) on a thin layer of (Ga,Mn)As co-doped with phosphorus was probed using magneto-optical Kerr effect (MOKE). A transient MOKE…
Equation of State, Stability, Anisotropy and Nonlinear Elasticity of Diamond-Cubic (ZB) Silicon by Phonon Imaging at High Pressure
F. Decremps, L. Belliard, M. Gauthier +1
Experimental phonon imaging in diamond anvils cell is demonstrated to be an adequate tool to extract the complete set of elastic constants of single-crystalline silicon up to the Z…
Sub-Terahertz Monochromatic Transduction with Semiconductor Acoustic Nanodevices
Agnes Huynh, Bernard Perrin, N. D. Lanzillotti Kimura +3
We demonstrate semiconductor superlattices or nanocavities as narrow band acoustic transducers in the sub-terahertz range. Using picosecond ultrasonics experiments in the transmiss…
Granular Avalanches in Fluids
S. Courrech du Pont, P. Gondret, B. Perrin +1
Three regimes of granular avalanches in fluids are put in light depending on the Stokes number St which prescribes the relative importance of grain inertia and fluid viscous effect…