Por favor, use este identificador para citar o enlazar a este item:
http://hdl.handle.net/10261/139833
COMPARTIR / EXPORTAR:
SHARE CORE BASE | |
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE | |
Título: | Temperature dependence of Raman-active phonons and anharmonic interactions in layered hexagonal BN |
Autor: | Cuscó, Ramón CSIC ORCID ; Gil, Bernard; Cassabois, Guillaume; Artús, Lluís CSIC ORCID | Palabras clave: | Raman scattering optical phonons |
Fecha de publicación: | oct-2016 | Editor: | American Physical Society | Citación: | Physical Review B - Condensed Matter and Materials Physics, 94(15): 155435 (2016) | Resumen: | We present a Raman scattering study of optical phonons in hexagonal BN for temperatures ranging from 80 to 600 K. The experiments were performed on high-quality, single-crystalline hexagonal BN platelets. The observed temperature dependence of the frequencies and linewidths of both Raman active E2g optical phonons is analyzed in the framework of anharmonic decay theory, and possible decay channels are discussed in the light of density-functional theory calculations. With increasing temperature, the E2ghigh mode displays strong anharmonic interactions, with a linewidth increase that indicates an important contribution of four-phonon processes and a marked frequency downshift that can be attributed to a substantial effect of the four-phonon scattering processes (quartic anharmonicity). In contrast, the E2glow mode displays a very narrow linewidth and weak anharmonic interactions, with a frequency downshift that is primarily accounted for by the thermal expansion of the interlayer spacing. © 2016 American Physical Society. | Versión del editor: | http://dx.doi.org/10.1103/PhysRevB.94.155435 | URI: | http://hdl.handle.net/10261/139833 | DOI: | 10.1103/PhysRevB.94.155435 | ISSN: | 1098-0121 | E-ISSN: | 1550-235X |
Aparece en las colecciones: | (Geo3Bcn) Artículos |
Ficheros en este ítem:
Fichero | Descripción | Tamaño | Formato | |
---|---|---|---|---|
Cusco_Physical_review_B_94_15_155435.pdf | 796,74 kB | Adobe PDF | Visualizar/Abrir |
CORE Recommender
SCOPUSTM
Citations
67
checked on 09-abr-2024
WEB OF SCIENCETM
Citations
65
checked on 24-feb-2024
Page view(s)
248
checked on 18-abr-2024
Download(s)
612
checked on 18-abr-2024
Google ScholarTM
Check
Altmetric
Altmetric
NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.