Spin Seebeck effect in insulating epitaxial ¿-Fe2O3 thin films

Jiménez-Cavero, P. (Universidad de Zaragoza) ; Lucas, I. (Universidad de Zaragoza) ; Anadón, A. (Universidad de Zaragoza) ; Ramos, R. ; Niizeki, T. ; Aguirre, M.H. (Universidad de Zaragoza) ; Algarabel, P.A. (Universidad de Zaragoza) ; Uchida, K. ; Ibarra, M.R. (Universidad de Zaragoza) ; Saitoh, E. ; Morellón, L. (Universidad de Zaragoza)
Spin Seebeck effect in insulating epitaxial ¿-Fe2O3 thin films
Resumen: We report the fabrication of high crystal quality epitaxial thin films of maghemite (¿-Fe2O3), a classic ferrimagnetic insulating iron oxide. Spin Seebeck effect (SSE) measurements in ¿-Fe2O3/Pt bilayers as a function of sample preparation conditions and temperature yield a SSE coefficient of 0.5(1) µV/K at room temperature. Dependence on temperature allows us to estimate the magnon diffusion length in maghemite to be in the range of tens of nanometers, in good agreement with that of conducting iron oxide magnetite (Fe3O4), establishing the relevance of spin currents of magnonic origin in magnetic iron oxides.
Idioma: Inglés
DOI: 10.1063/1.4975618
Año: 2017
Publicado en: APL Materials 5, 2 (2017), 026103 [8 pp.]
ISSN: 2166-532X

Factor impacto JCR: 4.127 (2017)
Categ. JCR: MATERIALS SCIENCE, MULTIDISCIPLINARY rank: 58 / 285 = 0.204 (2017) - Q1 - T1
Categ. JCR: PHYSICS, APPLIED rank: 26 / 146 = 0.178 (2017) - Q1 - T1
Categ. JCR: NANOSCIENCE & NANOTECHNOLOGY rank: 37 / 92 = 0.402 (2017) - Q2 - T2

Factor impacto SCIMAGO: 1.63 - Materials Science (miscellaneous) (Q1) - Engineering (miscellaneous) (Q1)

Financiación: info:eu-repo/grantAgreement/ES/DGA/E26
Financiación: info:eu-repo/grantAgreement/ES/MEC/FPU14-02456
Financiación: info:eu-repo/grantAgreement/ES/MINECO/MAT2014-51982-C2-R
Financiación: info:eu-repo/grantAgreement/ES/MINECO/MAT2014-51982-C2-1-R
Tipo y forma: Article (Published version)
Área (Departamento): Área Física Materia Condensada (Dpto. Física Materia Condensa.)

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