Temperature dependence of the spin Seebeck effect in [Fe3O4/Pt]n multilayers

Ramos, R. ; Kikkawa, T. ; Anadón, A. (Universidad de Zaragoza) ; Lucas, I. (Universidad de Zaragoza) ; Uchida, K. ; Algarabel, P.A. (Universidad de Zaragoza) ; Morellón, L. (Universidad de Zaragoza) ; Aguirre, M.H. (Universidad de Zaragoza) ; Saitoh, E. ; Ibarra, M.R. (Universidad de Zaragoza)

Resumen: We report temperature dependent measurements of the spin Seebeck effect (SSE) in multilayers formed by repeated growth of a Fe3O4/Pt bilayer junction. The magnitude of the observed enhancement of the SSE, relative to the SSE in the single bilayer, shows a monotonic increase with decreasing the temperature. This result can be understood by an increase of the characteristic length for spin current transport in the system, in qualitative agreement with the recently observed increase in the magnon diffusion length in Fe3O4 at lower temperatures. Our result suggests that the thermoelectric performance of the SSE in multilayer structures can be further improved by careful choice of materials with suitable spin transport properties.

Idioma: Inglés

DOI: 10.1063/1.4974060

Año: 2017

Publicado en: AIP advances 7, 5 (2017), 055915 [7 pp.]
ISSN: 2158-3226

Factor impacto JCR: 1.653 (2017)

Categ. JCR: MATERIALS SCIENCE, MULTIDISCIPLINARY rank: 174 / 285 = 0.611 (2017) - Q3 - T2
Categ. JCR: PHYSICS, APPLIED rank: 81 / 146 = 0.555 (2017) - Q3 - T2
Categ. JCR: NANOSCIENCE & NANOTECHNOLOGY rank: 69 / 92 = 0.75 (2017) - Q3 - T3

Factor impacto SCIMAGO: 0.472 - Physics and Astronomy (miscellaneous) (Q2) - Nanoscience and Nanotechnology (Q2)

Financiación: info:eu-repo/grantAgreement/ES/DGA/E26
Financiación: info:eu-repo/grantAgreement/EC/FP7/304043/EU/High Performance Energy Conversion by the interplay between Thermoelectricity and Spin Seebeck Effect/THERMO-SPINTRONIC
Financiación: info:eu-repo/grantAgreement/ES/MINECO/MAT2014-51982-C2-R

Tipo y forma: Article (Published version)

Área (Departamento): Área Física Materia Condensada (Dpto. Física Materia Condensa.)