Thermoelectric Signal Enhancement by Reconciling the Spin Seebeck and Anomalous Nernst Effects in Ferromagnet/Non-magnet Multilayers.
Thermoelectric Signal Enhancement by Reconciling the Spin Seebeck and Anomalous Nernst Effects in Ferromagnet/Non-magnet Multilayers.
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DOI：
10.1038/srep10249
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发表时间：
2015-05-28
影响因子：
4.6
通讯作者：
Park BG
中科院分区：
文献类型：
--
作者：
Lee KD;Kim DJ;Yeon Lee H;Kim SH;Lee JH;Lee KM;Jeong JR;Lee KS;Song HS;Sohn JW;Shin SC;Park BG
在热电器件中使用铁磁（FM）材料可使其结构更简单和/或能够独立控制电导率和热导率，这可能会进一步消除这项技术实现的障碍。利用光热源对铁磁/非磁（NM）异质结构中的热电性能进行了研究，研究其作为非磁材料和多层数量的函数关系。观察到，通过适当选择具有与反常能斯特效应（ANE）符号匹配的自旋霍尔角的非磁材料，由自旋塞贝克效应和反常能斯特效应共同贡献的那些结构中的整体热电信号得到增强。此外，随着多层数量的增加，热电电压进一步增大，同时器件电阻降低。热电性能改善的实验观察结果可能为实现基于磁性（或自旋）的热电器件铺平道路。
The utilization of ferromagnetic (FM) materials in thermoelectric devices allows one to have a simpler structure and/or independent control of electric and thermal conductivities, which may further remove obstacles for this technology to be realized. The thermoelectricity in FM/non-magnet (NM) heterostructures using an optical heating source is studied as a function of NM materials and a number of multilayers. It is observed that the overall thermoelectric signal in those structures which is contributed by spin Seebeck effect and anomalous Nernst effect (ANE) is enhanced by a proper selection of NM materials with a spin Hall angle that matches to the sign of the ANE. Moreover, by an increase of the number of multilayer, the thermoelectric voltage is enlarged further and the device resistance is reduced, simultaneously. The experimental observation of the improvement of thermoelectric properties may pave the way for the realization of magnetic-(or spin-) based thermoelectric devices.
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影响因子：
41.2
作者：
Jaworski, C. M.;Yang, J.;Myers, R. C.
通讯作者：
Myers, R. C.
影响因子：
56.9
作者：
Liu, Luqiao;Pai, Chi-Feng;Buhrman, R. A.
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Buhrman, R. A.
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56.9
作者：
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通讯作者：
Kanatzidis, MG
影响因子：
1.6
作者：
Boehnke, Alexander;Walter, Marvin;Reiss, Guenter
通讯作者：
Reiss, Guenter
影响因子：
3.7
作者：
Meier, D.;Reinhardt, D.;Reiss, G.
通讯作者：
Reiss, G.