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Ultrafast electron-lattice thermalization in copper and other noble metal nanoparticles

hal.structure.identifierInstitut Lumière Matière [Villeurbanne] [ILM]
dc.contributor.authorMONGIN, Denis
hal.structure.identifieriLM - FemtoNanoOptics [iLM - FemtoNanoOptics]
dc.contributor.authorMAIOLI, Paolo
hal.structure.identifierLaboratoire Ondes et Matière d'Aquitaine [LOMA]
dc.contributor.authorBURGIN, Julien
hal.structure.identifierLaboratoire Ondes et Matière d'Aquitaine [LOMA]
dc.contributor.authorLANGOT, Pierre
hal.structure.identifieriLM - Agrégats et nanostructures [iLM - AGNANO]
dc.contributor.authorCOTTANCIN, Emmanuel
hal.structure.identifierUniversità degli Studi di Modena e Reggio Emilia = University of Modena and Reggio Emilia [UNIMORE]
dc.contributor.authorD’ADDATO, Sergio
hal.structure.identifierINL - Spectroscopies et Nanomatériaux [INL - S&N]
dc.contributor.authorCANUT, Bruno
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorTRÉGUER-DELAPIERRE, Mona
hal.structure.identifieriLM - FemtoNanoOptics [iLM - FemtoNanoOptics]
dc.contributor.authorCRUT, Aurélien
hal.structure.identifieriLM - FemtoNanoOptics [iLM - FemtoNanoOptics]
dc.contributor.authorVALLÉE, Fabrice
hal.structure.identifieriLM - FemtoNanoOptics [iLM - FemtoNanoOptics]
dc.contributor.authorDEL FATTI, Natalia
dc.date.created2018-07-25
dc.date.issued2019-02-27
dc.identifier.issn0953-8984
dc.description.abstractEnUsing time-resolved ultrafast pump-probe spectroscopy we investigated the electron-lattice energy transfer in small copper nanospheres with diameters ranging from 3.2 to 23 nm, either embedded in a glass or dispersed in a solvent. Electron-lattice scattering rate is shown to increase with size reduction, in agreement with our previous results obtained on gold and silver nanoparticles in the low excitation regime. We attribute this effect to the reduction of the screening efficiency of electron–phonon interactions close to the nanoparticle surface. To understand the discrepancy between the results on the electron-lattice scattering in different metals reported in the literature (reduction, no dependence or increase with nanoparticle size), we discuss the experimental conditions required for the accurate determination of electron-lattice energy transfer time from time-resolved investigations in the weak and strong excitation regimes and present power-dependent experiments on gold nanospheres in solution. Our findings are derived from a theoretical analysis based on the two-temperature model predictions and on a complete modeling of the nanoparticle transient extinction cross-section through the resolution of Boltzmann equation in the presence of hot electrons.
dc.language.isoen
dc.publisherIOP Publishing
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/
dc.subject.enelectron-lattice interactions
dc.subject.entwo-temperature model
dc.subject.enultrafast electron dynamics
dc.subject.enpump-probe spectroscopy
dc.subject.encopper nanoparticles
dc.title.enUltrafast electron-lattice thermalization in copper and other noble metal nanoparticles
dc.typeArticle de revue
dc.identifier.doi10.1088/1361-648X/aaf7eb
dc.subject.halChimie/Matériaux
dc.subject.halSciences de l'ingénieur [physics]/Optique / photonique
bordeaux.journalJournal of Physics: Condensed Matter
bordeaux.page084001 (1-11)
bordeaux.volume31
bordeaux.issue8
bordeaux.peerReviewedoui
hal.identifierhal-01987430
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01987430v1
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