Raman phonon spectrum of the Dzyaloshinskii-Moriya helimagnet Ba2CuGe2O7

Autores
Capitanio, Fabiana Lia; Koval, Sergio Fabian; Fittipaldi, Diego Rodrigo; Caramazza, S.; Paris, E.; Mohamed, W. S.; Lorenzana, J.; Nucara, A.; Rocco, L.; Vecchione, A.; Postorino, P.; Calvani, P.
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The Raman spectrum of Ba2CuGe2O7, a tetragonal insulator which develops Dzyaloshinskii-Moriya helical magnetism below TN=3.2K, has been detected at temperatures varying from 300 to 80 K in a single crystal, with the radiation polarized either in the ab plane or along the c axis of its tetragonal cell. Twenty-nine phonon lines out of the 35 allowed by the Raman selection rules for the present geometry were observed, and their vibrational frequencies were found in overall good agreement with those provided by shell-model calculations. Together with the previous report on the infrared-active phonons [A. Nucara, Phys. Rev. B 90, 014304 (2014)PRBMDO1098-012110.1103/PhysRevB.90.014304], the present study provides an exhaustive description, both experimental and theoretical, of the lattice dynamics in Ba2CuGe2O7.
Fil: Capitanio, Fabiana Lia. Università degli studi di Roma ; Italia
Fil: Koval, Sergio Fabian. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Física de Rosario. Universidad Nacional de Rosario. Instituto de Física de Rosario; Argentina
Fil: Fittipaldi, Diego Rodrigo. Universita di Salerno; Italia. Consiglio Nazionale delle Ricerche; Italia
Fil: Caramazza, S.. Università degli studi di Roma ; Italia
Fil: Paris, E.. Istituto Italiano di Tecnologia. Center for Life Nano Science at Sapienza; Italia
Fil: Mohamed, W. S.. Università degli studi di Roma ; Italia
Fil: Lorenzana, J.. Consiglio Nazionale delle Ricerche; Italia. Università degli studi di Roma ; Italia
Fil: Nucara, A.. Consiglio Nazionale delle Ricerche; Italia. Università degli studi di Roma ; Italia
Fil: Rocco, L.. Consiglio Nazionale delle Ricerche; Italia. Universita di Salerno; Italia
Fil: Vecchione, A.. Consiglio Nazionale delle Ricerche; Italia. Universita di Salerno; Italia
Fil: Postorino, P.. Università degli studi di Roma ; Italia
Fil: Calvani, P.. Università degli studi di Roma ; Italia. Consiglio Nazionale delle Ricerche; Italia
Materia
Raman
Phonons
Multiferroic
Shell Model
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/52709
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/52709
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repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Raman phonon spectrum of the Dzyaloshinskii-Moriya helimagnet Ba2CuGe2O7Capitanio, Fabiana LiaKoval, Sergio FabianFittipaldi, Diego RodrigoCaramazza, S.Paris, E.Mohamed, W. S.Lorenzana, J.Nucara, A.Rocco, L.Vecchione, A.Postorino, P.Calvani, P.RamanPhononsMultiferroicShell Modelhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1The Raman spectrum of Ba2CuGe2O7, a tetragonal insulator which develops Dzyaloshinskii-Moriya helical magnetism below TN=3.2K, has been detected at temperatures varying from 300 to 80 K in a single crystal, with the radiation polarized either in the ab plane or along the c axis of its tetragonal cell. Twenty-nine phonon lines out of the 35 allowed by the Raman selection rules for the present geometry were observed, and their vibrational frequencies were found in overall good agreement with those provided by shell-model calculations. Together with the previous report on the infrared-active phonons [A. Nucara, Phys. Rev. B 90, 014304 (2014)PRBMDO1098-012110.1103/PhysRevB.90.014304], the present study provides an exhaustive description, both experimental and theoretical, of the lattice dynamics in Ba2CuGe2O7.Fil: Capitanio, Fabiana Lia. Università degli studi di Roma ; ItaliaFil: Koval, Sergio Fabian. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Física de Rosario. Universidad Nacional de Rosario. Instituto de Física de Rosario; ArgentinaFil: Fittipaldi, Diego Rodrigo. Universita di Salerno; Italia. Consiglio Nazionale delle Ricerche; ItaliaFil: Caramazza, S.. Università degli studi di Roma ; ItaliaFil: Paris, E.. Istituto Italiano di Tecnologia. Center for Life Nano Science at Sapienza; ItaliaFil: Mohamed, W. S.. Università degli studi di Roma ; ItaliaFil: Lorenzana, J.. Consiglio Nazionale delle Ricerche; Italia. Università degli studi di Roma ; ItaliaFil: Nucara, A.. Consiglio Nazionale delle Ricerche; Italia. Università degli studi di Roma ; ItaliaFil: Rocco, L.. Consiglio Nazionale delle Ricerche; Italia. Universita di Salerno; ItaliaFil: Vecchione, A.. Consiglio Nazionale delle Ricerche; Italia. Universita di Salerno; ItaliaFil: Postorino, P.. Università degli studi di Roma ; ItaliaFil: Calvani, P.. Università degli studi di Roma ; Italia. Consiglio Nazionale delle Ricerche; ItaliaAmerican Physical Society2015-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/52709Capitanio, Fabiana Lia; Koval, Sergio Fabian; Fittipaldi, Diego Rodrigo; Caramazza, S.; Paris, E.; et al.; Raman phonon spectrum of the Dzyaloshinskii-Moriya helimagnet Ba2CuGe2O7; American Physical Society; Physical Review B: Condensed Matter and Materials Physics; 91; 21; 6-2015; 214308-21430131098-0121CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevB.91.214308info:eu-repo/semantics/altIdentifier/url/https://journals.aps.org/prb/abstract/10.1103/PhysRevB.91.214308info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:38:08Zoai:ri.conicet.gov.ar:11336/52709instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:38:08.325CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Raman phonon spectrum of the Dzyaloshinskii-Moriya helimagnet Ba2CuGe2O7
title Raman phonon spectrum of the Dzyaloshinskii-Moriya helimagnet Ba2CuGe2O7
spellingShingle Raman phonon spectrum of the Dzyaloshinskii-Moriya helimagnet Ba2CuGe2O7
Capitanio, Fabiana Lia
Raman
Phonons
Multiferroic
Shell Model
title_short Raman phonon spectrum of the Dzyaloshinskii-Moriya helimagnet Ba2CuGe2O7
title_full Raman phonon spectrum of the Dzyaloshinskii-Moriya helimagnet Ba2CuGe2O7
title_fullStr Raman phonon spectrum of the Dzyaloshinskii-Moriya helimagnet Ba2CuGe2O7
title_full_unstemmed Raman phonon spectrum of the Dzyaloshinskii-Moriya helimagnet Ba2CuGe2O7
title_sort Raman phonon spectrum of the Dzyaloshinskii-Moriya helimagnet Ba2CuGe2O7
dc.creator.none.fl_str_mv Capitanio, Fabiana Lia
Koval, Sergio Fabian
Fittipaldi, Diego Rodrigo
Caramazza, S.
Paris, E.
Mohamed, W. S.
Lorenzana, J.
Nucara, A.
Rocco, L.
Vecchione, A.
Postorino, P.
Calvani, P.
author Capitanio, Fabiana Lia
author_facet Capitanio, Fabiana Lia
Koval, Sergio Fabian
Fittipaldi, Diego Rodrigo
Caramazza, S.
Paris, E.
Mohamed, W. S.
Lorenzana, J.
Nucara, A.
Rocco, L.
Vecchione, A.
Postorino, P.
Calvani, P.
author_role author
author2 Koval, Sergio Fabian
Fittipaldi, Diego Rodrigo
Caramazza, S.
Paris, E.
Mohamed, W. S.
Lorenzana, J.
Nucara, A.
Rocco, L.
Vecchione, A.
Postorino, P.
Calvani, P.
author2_role author
author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Raman
Phonons
Multiferroic
Shell Model
topic Raman
Phonons
Multiferroic
Shell Model
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The Raman spectrum of Ba2CuGe2O7, a tetragonal insulator which develops Dzyaloshinskii-Moriya helical magnetism below TN=3.2K, has been detected at temperatures varying from 300 to 80 K in a single crystal, with the radiation polarized either in the ab plane or along the c axis of its tetragonal cell. Twenty-nine phonon lines out of the 35 allowed by the Raman selection rules for the present geometry were observed, and their vibrational frequencies were found in overall good agreement with those provided by shell-model calculations. Together with the previous report on the infrared-active phonons [A. Nucara, Phys. Rev. B 90, 014304 (2014)PRBMDO1098-012110.1103/PhysRevB.90.014304], the present study provides an exhaustive description, both experimental and theoretical, of the lattice dynamics in Ba2CuGe2O7.
Fil: Capitanio, Fabiana Lia. Università degli studi di Roma ; Italia
Fil: Koval, Sergio Fabian. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Física de Rosario. Universidad Nacional de Rosario. Instituto de Física de Rosario; Argentina
Fil: Fittipaldi, Diego Rodrigo. Universita di Salerno; Italia. Consiglio Nazionale delle Ricerche; Italia
Fil: Caramazza, S.. Università degli studi di Roma ; Italia
Fil: Paris, E.. Istituto Italiano di Tecnologia. Center for Life Nano Science at Sapienza; Italia
Fil: Mohamed, W. S.. Università degli studi di Roma ; Italia
Fil: Lorenzana, J.. Consiglio Nazionale delle Ricerche; Italia. Università degli studi di Roma ; Italia
Fil: Nucara, A.. Consiglio Nazionale delle Ricerche; Italia. Università degli studi di Roma ; Italia
Fil: Rocco, L.. Consiglio Nazionale delle Ricerche; Italia. Universita di Salerno; Italia
Fil: Vecchione, A.. Consiglio Nazionale delle Ricerche; Italia. Universita di Salerno; Italia
Fil: Postorino, P.. Università degli studi di Roma ; Italia
Fil: Calvani, P.. Università degli studi di Roma ; Italia. Consiglio Nazionale delle Ricerche; Italia
description The Raman spectrum of Ba2CuGe2O7, a tetragonal insulator which develops Dzyaloshinskii-Moriya helical magnetism below TN=3.2K, has been detected at temperatures varying from 300 to 80 K in a single crystal, with the radiation polarized either in the ab plane or along the c axis of its tetragonal cell. Twenty-nine phonon lines out of the 35 allowed by the Raman selection rules for the present geometry were observed, and their vibrational frequencies were found in overall good agreement with those provided by shell-model calculations. Together with the previous report on the infrared-active phonons [A. Nucara, Phys. Rev. B 90, 014304 (2014)PRBMDO1098-012110.1103/PhysRevB.90.014304], the present study provides an exhaustive description, both experimental and theoretical, of the lattice dynamics in Ba2CuGe2O7.
publishDate 2015
dc.date.none.fl_str_mv 2015-06
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/52709
Capitanio, Fabiana Lia; Koval, Sergio Fabian; Fittipaldi, Diego Rodrigo; Caramazza, S.; Paris, E.; et al.; Raman phonon spectrum of the Dzyaloshinskii-Moriya helimagnet Ba2CuGe2O7; American Physical Society; Physical Review B: Condensed Matter and Materials Physics; 91; 21; 6-2015; 214308-2143013
1098-0121
CONICET Digital
CONICET
url http://hdl.handle.net/11336/52709
identifier_str_mv Capitanio, Fabiana Lia; Koval, Sergio Fabian; Fittipaldi, Diego Rodrigo; Caramazza, S.; Paris, E.; et al.; Raman phonon spectrum of the Dzyaloshinskii-Moriya helimagnet Ba2CuGe2O7; American Physical Society; Physical Review B: Condensed Matter and Materials Physics; 91; 21; 6-2015; 214308-2143013
1098-0121
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevB.91.214308
info:eu-repo/semantics/altIdentifier/url/https://journals.aps.org/prb/abstract/10.1103/PhysRevB.91.214308
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv American Physical Society
publisher.none.fl_str_mv American Physical Society
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.070432

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