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

被引：44

作者：

Ramos, R. ^{[1
,2
]}

Anadon, A. ^{[3
,4
]}

Lucas, I. ^{[3
,4
]}

Uchida, K. ^{[5
,6
]}

Algarabel, P. A. ^{[7
,8
]}

Morellon, L. ^{[3
,4
]}

Aguirre, M. H. ^{[3
,4
,9
]}

Saitoh, E. ^{[1
,2
,5
,10
]}

Ibarra, M. R. ^{[3
,4
,9
]}

机构：

[1] Tohoku Univ, WPI Adv Inst Mat Res, Sendai, Miyagi 9808577, Japan

[2] Japan Sci & Technol Agcy, ERATO, Spin Quantum Rectificat Project, Sendai, Miyagi 9808577, Japan

[3] Univ Zaragoza, Inst Nanociencia Aragon, E-50018 Zaragoza, Spain

[4] Univ Zaragoza, Dept Fis Mat Condensada, E-50009 Zaragoza, Spain

[5] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan

[6] Japan Sci & Technol Agcy, PRESTO, Saitama 3320012, Japan

[7] Univ Zaragoza, Inst Ciencia Mat Aragon, Zaragoza 50009, Spain

[8] CSIC, Zaragoza 50009, Spain

[9] Univ Zaragoza, Lab Microscopias Avanzadas, E-50018 Zaragoza, Spain

[10] Japan Atom Energy Agcy, Adv Sci Res Ctr, Tokai, Ibaraki 3191195, Japan

来源：

APL MATERIALS | 2016年 / 4卷 / 10期

关键词：

SPINTRONICS; FERROMAGNET; MAGNETITE;

D O I：

10.1063/1.4950994

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

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. (C) 2016 Author(s).

引用

页数：8

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