Non-reciprocal magnons in a two dimensional crystal with off-plane magnetization

Detalhes bibliográficos
Autor(a) principal: Costa, Marcio
Data de Publicação: 2020
Outros Autores: Fernandez-Rossier, J., Peres, N. M. R., Costa, A. T.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: https://hdl.handle.net/1822/68512
Resumo: Nonreciprocal spin waves have a chiral asymmetry so that their energy is different for two opposite wave vectors. They are found in atomically thin ferromagnetic overlayers with in-plane magnetization and are linked to the antisymmetric Dzyaloshinskii-Moriya surface exchange. We use an itinerant fermion theory based on first-principles calculations to predict that nonreciprocal magnons can occur in Fe3GeTe2, the first stand-alone metallic two-dimensional crystal with out-of-plane magnetization. We find that both the energy and lifetime of magnons are nonreciprocal, and we predict that acoustic magnons can have lifetimes up to hundreds of picoseconds, orders of magnitude larger than in other conducting magnets.
id RCAP_c97dc6b873c64d65e96cf922cd0325d2
oai_identifier_str oai:repositorium.sdum.uminho.pt:1822/68512
network_acronym_str RCAP
network_name_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository_id_str
spelling Non-reciprocal magnons in a two dimensional crystal with off-plane magnetizationCiências Naturais::Ciências FísicasScience & TechnologyNonreciprocal spin waves have a chiral asymmetry so that their energy is different for two opposite wave vectors. They are found in atomically thin ferromagnetic overlayers with in-plane magnetization and are linked to the antisymmetric Dzyaloshinskii-Moriya surface exchange. We use an itinerant fermion theory based on first-principles calculations to predict that nonreciprocal magnons can occur in Fe3GeTe2, the first stand-alone metallic two-dimensional crystal with out-of-plane magnetization. We find that both the energy and lifetime of magnons are nonreciprocal, and we predict that acoustic magnons can have lifetimes up to hundreds of picoseconds, orders of magnitude larger than in other conducting magnets.N.M.R.P. acknowledges support from the European Commission through the project Graphene-Driven Revolutions in ICT and Beyond (Ref. No. 881603 -Core 3), and the Portuguese Foundation for Science and Technology (FCT) in the framework of the Strategic Financing UID/FIS/04650/2013, COMPETE2020, PORTUGAL2020, FEDER, and the Portuguese Foundation for Science and Technology (FCT) through Projects No. PTDC/FISNAN/3668/2013 and No. POCI-01-0145-FEDER-028114. J.F.-R. acknowledges financial support from FCT for Project No. UTAP-EXPL/NTec/0046/2017, as well as Generalitat Valenciana funding Prometeo2017/139 and MINECO-Spain (Grant No. MAT2016-78625-C2). A.T.C. acknowledges the use of computer resources at MareNostrum and technical support provided by the Barcelona Supercomputing Center (RES-FI-2019-2-0034, RES-FI-2019-3-0019).American Physical SocietyUniversidade do MinhoCosta, MarcioFernandez-Rossier, J.Peres, N. M. R.Costa, A. T.2020-072020-07-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/1822/68512eng2469-995010.1103/PhysRevB.102.014450https://journals.aps.org/prb/abstract/10.1103/PhysRevB.102.014450info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-07-21T11:54:29ZPortal AgregadorONG
dc.title.none.fl_str_mv Non-reciprocal magnons in a two dimensional crystal with off-plane magnetization
title Non-reciprocal magnons in a two dimensional crystal with off-plane magnetization
spellingShingle Non-reciprocal magnons in a two dimensional crystal with off-plane magnetization
Costa, Marcio
Ciências Naturais::Ciências Físicas
Science & Technology
title_short Non-reciprocal magnons in a two dimensional crystal with off-plane magnetization
title_full Non-reciprocal magnons in a two dimensional crystal with off-plane magnetization
title_fullStr Non-reciprocal magnons in a two dimensional crystal with off-plane magnetization
title_full_unstemmed Non-reciprocal magnons in a two dimensional crystal with off-plane magnetization
title_sort Non-reciprocal magnons in a two dimensional crystal with off-plane magnetization
author Costa, Marcio
author_facet Costa, Marcio
Fernandez-Rossier, J.
Peres, N. M. R.
Costa, A. T.
author_role author
author2 Fernandez-Rossier, J.
Peres, N. M. R.
Costa, A. T.
author2_role author
author
author
dc.contributor.none.fl_str_mv Universidade do Minho
dc.contributor.author.fl_str_mv Costa, Marcio
Fernandez-Rossier, J.
Peres, N. M. R.
Costa, A. T.
dc.subject.por.fl_str_mv Ciências Naturais::Ciências Físicas
Science & Technology
topic Ciências Naturais::Ciências Físicas
Science & Technology
description Nonreciprocal spin waves have a chiral asymmetry so that their energy is different for two opposite wave vectors. They are found in atomically thin ferromagnetic overlayers with in-plane magnetization and are linked to the antisymmetric Dzyaloshinskii-Moriya surface exchange. We use an itinerant fermion theory based on first-principles calculations to predict that nonreciprocal magnons can occur in Fe3GeTe2, the first stand-alone metallic two-dimensional crystal with out-of-plane magnetization. We find that both the energy and lifetime of magnons are nonreciprocal, and we predict that acoustic magnons can have lifetimes up to hundreds of picoseconds, orders of magnitude larger than in other conducting magnets.
publishDate 2020
dc.date.none.fl_str_mv 2020-07
2020-07-01T00:00:00Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://hdl.handle.net/1822/68512
url https://hdl.handle.net/1822/68512
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 2469-9950
10.1103/PhysRevB.102.014450
https://journals.aps.org/prb/abstract/10.1103/PhysRevB.102.014450
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 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:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1777303640408588288

Registros relacionados