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1. Identificação
Tipo de ReferênciaArtigo em Evento (Conference Proceedings)
Sitemtc-m21b.sid.inpe.br
Código do Detentorisadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S
Identificador8JMKD3MGP3W34P/3JSPAN2
Repositóriosid.inpe.br/mtc-m21b/2015/07.20.17.15
Última Atualização2015:10.02.11.28.58 (UTC) administrator
Repositório de Metadadossid.inpe.br/mtc-m21b/2015/07.20.17.15.16
Última Atualização dos Metadados2018:06.04.02.55.30 (UTC) administrator
Chave SecundáriaINPE--PRE/
Chave de CitaçãoSubkhangulovMIHRARK:2015:FeOpEx
TítuloFemtosecond optical excitation of spin resonances in the easy plane antiferromagnet semiconductor EuTe
Ano2015
Data de Acesso06 maio 2024
Tipo SecundárioPRE CI
Número de Arquivos1
Tamanho85 KiB
2. Contextualização
Autor1 Subkhangulov, R.
2 Mikhaylovskiy, R.
3 Ivanov, B.
4 Henriques, A.
5 Rappl, Paulo Henrique de Oliveira
6 Abramof, Eduardo
7 Rasing, T.
8 Kimel, A.
Identificador de Curriculo1
2
3
4
5
6 8JMKD3MGP5W/3C9JGUH
Grupo1
2
3
4
5 LAS-CTE-INPE-MCTI-GOV-BR
6 LAS-CTE-INPE-MCTI-GOV-BR
Afiliação1 University Nijmegen
2 University Nijmegen
3 Institute of Magnetism
4 Universidade de São Paulo (USP)
5 Instituto Nacional de Pesquisas Espaciais (INPE)
6 Instituto Nacional de Pesquisas Espaciais (INPE)
7 Radboud University Nijmegen
8 Radboud University Nijmegen
Endereço de e-Mail do Autor1
2
3
4
5 rappl@las.inpe.br
6 eduardo.abramof@inpe.br
Nome do EventoInternational Conference on Magnetism, 20
Localização do EventoBarcelona, Spain
Data5-10 July
Histórico (UTC)2015-07-20 17:15:17 :: simone -> administrator ::
2018-06-04 02:55:30 :: administrator -> simone :: 2015
3. Conteúdo e estrutura
É a matriz ou uma cópia?é a matriz
Estágio do Conteúdoconcluido
Transferível1
Tipo do ConteúdoExternal Contribution
Tipo de Versãopublisher
ResumoUnderstanding laser-induced spin dynamics in magnetic materials is a cornerstone for highspeed spintronics and magnetic recording. Here we investigated the ultrafast spin dynamics in the model Heisenberg antiferromagnetic semiconductor EuTe. We employed a time-resolved all-optical pump-probe technique at a temperature of 1.7 K and magnetic fields up to 70 kG applied in the plane of the sample. We demonstrate that the optically excited electrons from the 4f to 5d EuTe band trigger antiferromagnetic spin precession consisting of two modes, in accordance with the theoretical model for an easy plane antiferromagnet. Analyzing the efficiency of the excitation of the modes as a function of the applied magnetic field we found that the antiferromagnetic spin precession is induced by the ferromagnetic 5d- 4f exchange interaction, which is high in comparison with the antiferromagnetic f-f exchange. The d-f exchange in EuTe, in particular, gives rise to the isotropic magneto refractive effect. It is manifested as a modulation of the bandgap of EuTe at the antiferromagnetic resonance frequency and can be monitored by measuring the pump induced reflectivity changes in the probe beam. We found that the antiferromagnetic s precession is triggered at magnetic fields higher than that of the spin flop transition at ~1 kG, and lower than that of spin flip transition at ~70 kG. We found that at magnetic fields, corresponding to the crossing of the two modes, the amplitudes of both modes are strongly enhanced; meanwhile the damping is strongly suppressed. The amplitude enhancement can be explained by a weak coupling of the two antiferromagnetic modes, which can be due to a small non-collinearity of the external magnetic field to the sample plane. We show that the damping suppression can be explained by accounting possible modification of the damping by the 5d electrons.
ÁreaFISMAT
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4. Condições de acesso e uso
URL dos dadoshttp://mtc-m21b.sid.inpe.br/ibi/8JMKD3MGP3W34P/3JSPAN2
URL dos dados zipadoshttp://mtc-m21b.sid.inpe.br/zip/8JMKD3MGP3W34P/3JSPAN2
Idiomaen
Grupo de Usuáriosself-uploading-INPE-MCTI-GOV-BR
simone
Grupo de Leitoresadministrator
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Visibilidadeshown
Permissão de Leituraallow from all
Permissão de Atualizaçãonão transferida
5. Fontes relacionadas
VinculaçãoTrabalho não Vinculado à Tese/Dissertação
Repositório Espelhourlib.net/www/2011/03.29.20.55
Unidades Imediatamente Superiores8JMKD3MGPCW/3ESR3H2
Lista de Itens Citando
Acervo Hospedeirosid.inpe.br/mtc-m21b/2013/09.26.14.25.20
6. Notas
Campos Vaziosarchivingpolicy archivist booktitle callnumber copyholder copyright creatorhistory descriptionlevel dissemination doi e-mailaddress edition editor format isbn issn keywords label lineage mark nextedition notes numberofvolumes orcid organization pages parameterlist parentrepositories previousedition previouslowerunit progress project publisher publisheraddress rightsholder schedulinginformation secondarydate secondarymark serieseditor session shorttitle sponsor subject targetfile tertiarytype type url volume
7. Controle da descrição
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