| 1. Identity statement | ||||
| Reference Type | Conference Paper (Conference Proceedings) | |||
| Site | mtc-m21b.sid.inpe.br | |||
| Holder Code | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S | |||
| Identifier | 8JMKD3MGP3W34P/3JSPAN2 | |||
| Repository | sid.inpe.br/mtc-m21b/2015/07.20.17.15 | |||
| Last Update | 2015:10.02.11.28.58 (UTC) administrator | |||
| Metadata Repository | sid.inpe.br/mtc-m21b/2015/07.20.17.15.16 | |||
| Metadata Last Update | 2018:06.04.02.55.30 (UTC) administrator | |||
| Secondary Key | INPE--PRE/ | |||
| Citation Key | SubkhangulovMIHRARK:2015:FeOpEx | |||
| Title | Femtosecond optical excitation of spin resonances in the easy plane antiferromagnet semiconductor EuTe  | |||
| Year | 2015 | |||
| Access Date | 2024, May 18 | |||
| Secondary Type | PRE CI | |||
| Number of Files | 1 | |||
| Size | 85 KiB | |||
| 2. Context | ||||
| Author | 1 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. | |||
| Resume Identifier | 1 2 3 4 5 6 8JMKD3MGP5W/3C9JGUH | |||
| Group | 1 2 3 4 5 LAS-CTE-INPE-MCTI-GOV-BR 6 LAS-CTE-INPE-MCTI-GOV-BR | |||
| Affiliation | 1 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 | |||
| Author e-Mail Address | 1 2 3 4 5 rappl@las.inpe.br 6 eduardo.abramof@inpe.br | |||
| Conference Name | International Conference on Magnetism, 20 | |||
| Conference Location | Barcelona, Spain | |||
| Date | 5-10 July | |||
| History (UTC) | 2015-07-20 17:15:17 :: simone -> administrator :: 2018-06-04 02:55:30 :: administrator -> simone :: 2015 | |||
| 3. Content and structure | ||||
| Is the master or a copy? | is the master | |||
| Content Stage | completed | |||
| Transferable | 1 | |||
| Content Type | External Contribution | |||
| Version Type | publisher | |||
| Abstract | Understanding 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. | |||
| Area | FISMAT | |||
| Arrangement | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > LABAS > Femtosecond optical excitation... | |||
| doc Directory Content | access | |||
| source Directory Content | there are no files | |||
| agreement Directory Content |
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| 4. Conditions of access and use | ||||
| data URL | http://mtc-m21b.sid.inpe.br/ibi/8JMKD3MGP3W34P/3JSPAN2 | |||
| zipped data URL | http://mtc-m21b.sid.inpe.br/zip/8JMKD3MGP3W34P/3JSPAN2 | |||
| Language | en | |||
| User Group | self-uploading-INPE-MCTI-GOV-BR simone | |||
| Reader Group | administrator simone | |||
| Visibility | shown | |||
| Read Permission | allow from all | |||
| Update Permission | not transferred | |||
| 5. Allied materials | ||||
| Linking | Trabalho não Vinculado à Tese/Dissertação | |||
| Mirror Repository | urlib.net/www/2011/03.29.20.55 | |||
| Next Higher Units | 8JMKD3MGPCW/3ESR3H2 | |||
| Citing Item List | sid.inpe.br/mtc-m21/2012/07.13.14.44.57 1 | |||
| Host Collection | sid.inpe.br/mtc-m21b/2013/09.26.14.25.20 | |||
| 6. Notes | ||||
| Empty Fields | archivingpolicy 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. Description control | ||||
| e-Mail (login) | simone | |||
| update | ||||