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

Rafael Ramos,A. Anadón,I. Lucas,Ken-Ichi Uchida,P. A. Algarabel,L Morellon,Myriam Haydée Aguirre,Eiji Saitoh,M. R. Ibarra;Rafael Ramos;A. Anadón;I. Lucas;Ken-Ichi Uchida;P. A. Algarabel;L Morellon;Myriam Haydée Aguirre;Eiji Saitoh;M. R. Ibarra;
apl materials 2016 Vol. 4 pp. 104802-
275
ibarra2016aplthermoelectric

Abstract

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.

Keywords

oxides minerals thin films transition metals heterostructures ferromagnetism thermoelectric effects magnons thermopile ionospheric physics

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DOI:
10.1063/1.4950994
URL:
https://sciprofiles.com/publication/view/5bfc480d4...

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ID: 113108
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