Thermoelectric performance of spin Seebeck effect in Fe3O4/Pt-based thin film heterostructures

Ramos, R. ; 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 a systematic study on the thermoelectric performance of spin Seebeck devices based on Fe3O4/Pt junction systems. We explore two types of device geometries: a spin Hall thermopile and spin Seebeck multilayer structures. The spin Hall thermopile increases the sensitivity of the spin Seebeck effect, while the increase in the sample internal resistance has a detrimental effect on the output power. We found that the spin Seebeck multilayers can overcome this limitation since the multilayers exhibit the enhancement of the thermoelectric voltage and the reduction of the internal resistance simultaneously, therefore resulting in significant power enhancement. This result demonstrates that the multilayer structures are useful for improving the thermoelectric performance of the spin Seebeck effect.

Idioma: Inglés

DOI: 10.1063/1.4950994

Año: 2016

Publicado en: APL Materials 4, 10 (2016), 104802 [8 pp]
ISSN: 2166-532X

Factor impacto JCR: 4.335 (2016)

Categ. JCR: MATERIALS SCIENCE, MULTIDISCIPLINARY rank: 46 / 275 = 0.167 (2016) - Q1 - T1
Categ. JCR: PHYSICS, APPLIED rank: 23 / 147 = 0.156 (2016) - Q1 - T1
Categ. JCR: NANOSCIENCE & NANOTECHNOLOGY rank: 28 / 87 = 0.322 (2016) - Q2 - T1

Factor impacto SCIMAGO: 2.177 - Materials Science (miscellaneous) (Q1) - Engineering (miscellaneous) (Q1)

Financiación: info:eu-repo/grantAgreement/ES/DGA/E26-304043
Financiación: info:eu-repo/grantAgreement/ES/MINECO/MAT2011-27553-C02
Financiación: info:eu-repo/grantAgreement/ES/MINECO/PRI-PIBJP-2011-0794

Tipo y forma: Article (Published version)

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