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Electron-phonon coupling parameter of ferromagnetic metal fe and co

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dc.contributor.authorKang, Kyuhwe-
dc.contributor.authorGyung-Min Choi-
dc.date.accessioned2021-07-12T05:30:10Z-
dc.date.accessioned2021-07-12T05:30:10Z-
dc.date.available2021-07-12T05:30:10Z-
dc.date.available2021-07-12T05:30:10Z-
dc.date.created2021-07-07-
dc.date.issued2021-06-
dc.identifier.urihttps://pr.ibs.re.kr/handle/8788114/9917-
dc.description.abstract© 2021 by the authors. Licensee MDPI, Basel, Switzerland.The electron-phonon coupling (g) parameter plays a critical role in the ultrafast transport of heat, charge, and spin in metallic materials. However, the exact determination of the g parameter is challenging because of the complicated process during the non-equilibrium state. In this study, we investigate the g parameters of ferromagnetic 3d transition metal (FM) layers, Fe and Co, using time-domain thermoreflectance. We measure a transient increase in temperature of Au in an FM/Au bilayer; the Au layer efficiently detects the strong heat flow during the non-equilibrium between electrons and phonons in FM. The g parameter of the FM is determined by analyzing the temperature dynamics using thermal circuit modeling. The determined g values are 8.8–9.4 × 1017 W m−3 K−1 for Fe and 9.6–12.2 × 1017 W m−3 K−1 for Co. Our results demonstrate that all 3d transition FMs have a similar g value, in the order of 1018 W m−3 K−1.-
dc.description.uri1-
dc.language영어-
dc.publisherMDPI AG-
dc.titleElectron-phonon coupling parameter of ferromagnetic metal fe and co-
dc.typeArticle-
dc.type.rimsART-
dc.identifier.wosid000660946200001-
dc.identifier.scopusid2-s2.0-85107111440-
dc.identifier.rimsid75977-
dc.contributor.affiliatedAuthorGyung-Min Choi-
dc.identifier.doi10.3390/ma14112755-
dc.identifier.bibliographicCitationMaterials, v.14, no.11-
dc.citation.titleMaterials-
dc.citation.volume14-
dc.citation.number11-
dc.description.journalClass1-
dc.description.isOpenAccessN-
dc.description.journalRegisteredClassscie-
dc.description.journalRegisteredClassscopus-
dc.relation.journalWebOfScienceCategoryChemistry, Physical-
dc.relation.journalWebOfScienceCategoryMaterials Science, Multidisciplinary-
dc.relation.journalWebOfScienceCategoryMetallurgy & Metallurgical Engineering-
dc.relation.journalWebOfScienceCategoryPhysics, Applied-
dc.relation.journalWebOfScienceCategoryPhysics, Condensed Matter-
dc.subject.keywordPlusTHERMAL-CONDUCTIVITY-
dc.subject.keywordPlusENERGY RELAXATION-
dc.subject.keywordPlusFEMTOSECOND-
dc.subject.keywordPlusDYNAMICS-
dc.subject.keywordPlusCR-
dc.subject.keywordAuthorElectron-phonon coupling-
dc.subject.keywordAuthorNanoscale thermal transport-
dc.subject.keywordAuthorTime-resolved spectroscopy-
Appears in Collections:
Center for Integrated Nanostructure Physics(나노구조물리 연구단) > 1. Journal Papers (저널논문)
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