The effect of echoes interference on phonon attenuation in a nanophononic membrane

Autor: Mohammad Hadi, Haoming Luo, Stéphane Pailhès, Anne Tanguy, Anthony Gravouil, Flavio Capotondi, Dario De Angelis, Danny Fainozzi, Laura Foglia, Riccardo Mincigrucci, Ettore Paltanin, Emanuele Pedersoli, Jacopo S. Pelli-Cresi, Filippo Bencivenga, Valentina M. Giordano

Publikováno v: Nature Communications, Vol 15, Iss 1, Pp 1-9 (2024)

Abstract Nanophononic materials are characterized by a periodic nanostructuration, which may lead to coherent scattering of phonons, enabling interference and resulting in modified phonon dispersions. We have used the extreme ultraviolet transient gr

Externí odkaz: https://doaj.org/article/112f637a0fff444f8b7220edbf16343d

Direct measurement of individual phonon lifetimes in the clathrate compound Ba7.81Ge40.67Au5.33

Autor: Pierre-François Lory, Stéphane Pailhès, Valentina M. Giordano, Holger Euchner, Hong Duong Nguyen, Reiner Ramlau, Horst Borrmann, Marcus Schmidt, Michael Baitinger, Matthias Ikeda, Petr Tomeš, Marek Mihalkovič, Céline Allio, Mark Robert Johnson, Helmut Schober, Yvan Sidis, Frédéric Bourdarot, Louis Pierre Regnault, Jacques Ollivier, Silke Paschen, Yuri Grin, Marc de Boissieu

Publikováno v: Nature Communications, Vol 8, Iss 1, Pp 1-10 (2017)

Phonon lifetime is a fundamental parameter of thermal transport however its determination is challenging. Using inelastic neutron scattering and the neutron resonant spin-echo technique, Lory et al. determine the acoustic phonon lifetime in a single

Externí odkaz: https://doaj.org/article/57485382d627427aa06863b5f6198a71

Nanocomposites of chalcogenide phase-change materials: from C-doping of thin films to advanced multilayers

Autor: Rebecca Chahine, Martina Tomelleri, Jessy Paterson, Mathieu Bernard, Nicolas Bernier, François Pierre, Denis Rouchon, Audrey Jannaud, Cristian Mocuta, Valentina M. Giordano, Françoise Hippert, Pierre Noé

Publikováno v: Journal of Materials Chemistry C. 11:269-284

Engineering of chalcogenide phase-change materials at the nanoscale is required to improve the performances of ultimate size memory devices and reduce their power consumption.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::51e2bf32ddedc8c35fa1b1db3798a84c
https://doi.org/10.1039/d2tc03567g

Giant Tuning of Electronic and Thermoelectric Properties by Epitaxial Strain in p-Type Sr-Doped LaCrO3 Transparent Thin Films

Autor: Ignasi Fina, Geneviève Grenet, Stéphane Pailhès, D. Han, Romain Bachelet, Claude Botella, Régis Debord, Marc d'Esperonnat, R. Moalla, Valentina M. Giordano, Guillaume Saint-Girons

Publikováno v: Digital.CSIC. Repositorio Institucional del CSIC
instname
ACS Applied Electronic Materials
ACS Applied Electronic Materials, American Chemical Society, 2021, 3 (8), pp.3461-3471. ⟨10.1021/acsaelm.1c00425⟩

The impact of epitaxial strain on the structural, electronic, and thermoelectric properties of p-type transparent Sr-doped LaCrO3 thin films has been investigated. For this purpose, high-quality fully-strained La0.75Sr0.25CrO3 (LSCO) epitaxial thin f

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::027ee46e86ba50f3625d268ecca84e68

Sound velocity and refractive index of pure N2 fluid and of equimolar N2 –CO2 fluid mixture up to 15 GPa

Autor: Agnès Dewaele, Valentina M. Giordano, P. Loubeyre, Frédéric Datchi, S. Ninet, Gunnar Weck

Publikováno v: Journal of Chemical Physics
Journal of Chemical Physics, 2020, 153 (11), pp.114503. ⟨10.1063/5.0021678⟩
Journal of Chemical Physics, American Institute of Physics, 2020, 153 (11), pp.114503. ⟨10.1063/5.0021678⟩

International audience; The sound velocity and refractive index of pure N2 and of the equimolar N2–CO2 mixture are measured up to 15 GPa and 700 K in a resistive heating diamond anvil cell. The refractive index vs pressure is obtained by an interfe

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c72d08a62281d678f2090c2019422089
https://hal.science/hal-02954826/document