Effects of isotopic substitution on the phonons of van der Waals crystals: the case of hexagonal boron nitride

The recent availability of isotopically pure samples of hexagonal boron nitride (h-BN) has allowed the isotopic substitution effects to be studied in this highly interesting layered crystal. Here, we review the application of Raman scattering to investigate phonon anharmonic decay and its particular...

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Autores: Cuscó, Ramón, Edgar, J. H., Liu, S., Cassabois, Guillaume, Gil, B., Artús, Lluís
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2019
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/182506
Acceso en línea:http://hdl.handle.net/10261/182506
Access Level:acceso abierto
Palabra clave:van der Waals crystals
phonon anharmonicity
isotopic substitution
Raman scattering
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spelling Effects of isotopic substitution on the phonons of van der Waals crystals: the case of hexagonal boron nitrideCuscó, RamónEdgar, J. H.Liu, S.Cassabois, GuillaumeGil, B.Artús, Lluísvan der Waals crystalsphonon anharmonicityisotopic substitutionRaman scatteringThe recent availability of isotopically pure samples of hexagonal boron nitride (h-BN) has allowed the isotopic substitution effects to be studied in this highly interesting layered crystal. Here, we review the application of Raman scattering to investigate phonon anharmonic decay and its particularities in layered crystals, exemplified by h-BN. The modification of the phonon spectrum and anharmonic phonon decay paths in isotopically pure samples is specifically addressed. Detailed information about phonon lifetimes and decay channels is obtained for h-BN from a thorough analysis of temperature-dependent Raman scattering measurements in the light of density functional theory and perturbation theory calculations. The phonon lifetime is substantially increased in isotopically pure crystals, which may have important implications for the development of low-loss h-BN based phonon-polariton devices. On account of the low cation mass, isotopic substitution substantially alters the dominant phonon decay pathways and changes the strength of phonon anharmonic interactions.This work has been financially supported by the Spanish MINECO/FEDER under Contract No. MAT2015-71035-R. B G acknowledges the Russian Megagrant program (Ioffe Institute of RAS, contract #14.W03.31.0011). Support for the h-BN crystal growth was provided by the National Science Foundation, Grant No. CMMI 1538127.Peer reviewedIOP PublishingMinisterio de Economía y Competitividad (España)National Science Foundation (US)Cuscó, Ramón [0000-0001-9490-4884]Artús, Lluís [ 0000-0001-7912-8944 ]Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]201920192019info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/182506reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttps://doi.org/10.1088/1361-6463/ab1cabSíinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/1825062026-05-22T06:33:51Z
dc.title.none.fl_str_mv Effects of isotopic substitution on the phonons of van der Waals crystals: the case of hexagonal boron nitride
title Effects of isotopic substitution on the phonons of van der Waals crystals: the case of hexagonal boron nitride
spellingShingle Effects of isotopic substitution on the phonons of van der Waals crystals: the case of hexagonal boron nitride
Cuscó, Ramón
van der Waals crystals
phonon anharmonicity
isotopic substitution
Raman scattering
title_short Effects of isotopic substitution on the phonons of van der Waals crystals: the case of hexagonal boron nitride
title_full Effects of isotopic substitution on the phonons of van der Waals crystals: the case of hexagonal boron nitride
title_fullStr Effects of isotopic substitution on the phonons of van der Waals crystals: the case of hexagonal boron nitride
title_full_unstemmed Effects of isotopic substitution on the phonons of van der Waals crystals: the case of hexagonal boron nitride
title_sort Effects of isotopic substitution on the phonons of van der Waals crystals: the case of hexagonal boron nitride
dc.creator.none.fl_str_mv Cuscó, Ramón
Edgar, J. H.
Liu, S.
Cassabois, Guillaume
Gil, B.
Artús, Lluís
author Cuscó, Ramón
author_facet Cuscó, Ramón
Edgar, J. H.
Liu, S.
Cassabois, Guillaume
Gil, B.
Artús, Lluís
author_role author
author2 Edgar, J. H.
Liu, S.
Cassabois, Guillaume
Gil, B.
Artús, Lluís
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Ministerio de Economía y Competitividad (España)
National Science Foundation (US)
Cuscó, Ramón [0000-0001-9490-4884]
Artús, Lluís [ 0000-0001-7912-8944 ]
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv van der Waals crystals
phonon anharmonicity
isotopic substitution
Raman scattering
topic van der Waals crystals
phonon anharmonicity
isotopic substitution
Raman scattering
description The recent availability of isotopically pure samples of hexagonal boron nitride (h-BN) has allowed the isotopic substitution effects to be studied in this highly interesting layered crystal. Here, we review the application of Raman scattering to investigate phonon anharmonic decay and its particularities in layered crystals, exemplified by h-BN. The modification of the phonon spectrum and anharmonic phonon decay paths in isotopically pure samples is specifically addressed. Detailed information about phonon lifetimes and decay channels is obtained for h-BN from a thorough analysis of temperature-dependent Raman scattering measurements in the light of density functional theory and perturbation theory calculations. The phonon lifetime is substantially increased in isotopically pure crystals, which may have important implications for the development of low-loss h-BN based phonon-polariton devices. On account of the low cation mass, isotopic substitution substantially alters the dominant phonon decay pathways and changes the strength of phonon anharmonic interactions.
publishDate 2019
dc.date.none.fl_str_mv 2019
2019
2019
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/182506
url http://hdl.handle.net/10261/182506
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv https://doi.org/10.1088/1361-6463/ab1cab
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv IOP Publishing
publisher.none.fl_str_mv IOP Publishing
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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