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Optical spectroscopy study of damage induced in 4H-SiC by swift heavy ion irradiation

hal.structure.identifierINSTRU
dc.contributor.authorSORIEUL, S.
hal.structure.identifierService des Recherches Métallurgiques Appliquées [SRMA]
dc.contributor.authorCOSTANTINI, J.-M.
hal.structure.identifierService d'Etudes des Matériaux Irradiés [SEMI]
dc.contributor.authorGOSMAIN, L.
hal.structure.identifierInstitut de minéralogie et de physique des milieux condensés [IMPMC]
dc.contributor.authorCALAS, G.
hal.structure.identifierInstitut de minéralogie et de physique des milieux condensés [IMPMC]
dc.contributor.authorTRAUTMANN, C.
hal.structure.identifierService des Recherches Métallurgiques Appliquées [SRMA]
dc.contributor.authorKERBIRIOU, X.
dc.date.issued2012
dc.identifier.issn0953-8984
dc.description.abstractEnSingle crystals of 4H-SiC were irradiated with swift heavy ions (332 MeV Ti, 106 MeV Pb and 2.7 GeV U) in the electronic energy loss regime. The resulting damage was investigated with UV-visible optical absorption spectroscopy and micro-Raman spectroscopy. The evolution of the Raman data with fluence shows an accumulation of isolated point defects without amorphization of the material and a partial recrystallization of the structure, but only at the lowest fluence. Furthermore, the longitudinal optical phonon-plasmon coupling mode disappears upon irradiation, suggesting a strong perturbation of the electronic structure. This evolution is consistent with the optical bandgap decrease and the Urbach edge broadening that was also previously observed for the irradiation with 4 MeV Au ions.
dc.language.isoen
dc.publisherIOP Publishing
dc.title.enOptical spectroscopy study of damage induced in 4H-SiC by swift heavy ion irradiation
dc.typeArticle de revue
dc.identifier.doi10.1088/0953-8984/24/12/125801
dc.subject.halPlanète et Univers [physics]/Sciences de la Terre/Minéralogie
bordeaux.journalJournal of Physics: Condensed Matter
bordeaux.page125801
bordeaux.volume24
bordeaux.peerReviewedoui
hal.identifierhal-00675478
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00675478v1
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