Thermoelectric Generation Based on Spin Seebeck Effects
Thermoelectric Generation Based on Spin Seebeck Effects
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DOI：
10.1109/jproc.2016.2535167
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发表时间：
2016-04
影响因子：
20.6
通讯作者：
K. Uchida;H. Adachi;T. Kikkawa;A. Kirihara;M. Ishida;S. Yorozu;S. Maekawa;E. Saitoh
中科院分区：
文献类型：
--
作者：
K. Uchida;H. Adachi;T. Kikkawa;A. Kirihara;M. Ishida;S. Yorozu;S. Maekawa;E. Saitoh
自旋塞贝克效应（SSE）是指由于包括绝缘体的磁性材料中的温度梯度而产生自旋电流。SSE适用于热电发电，因为热产生的自旋电流可以通过邻近磁体的导电材料中的自旋轨道相互作用转换为充电电流。基于绝缘体的SSE器件具有非常规的特性，可能对热电应用有用，例如结构简单，器件设计灵活性和方便的缩放能力。在这篇文章中，我们回顾了最近的研究SSE从热电应用的角度。首先，我们介绍了热电发电过程和测量配置的SSE，然后显示SSE设备的基本特性。其次，介绍了SSE器件的热电转换效率理论，阐明了SSE与传统热电效应的区别以及SSE器件的效率极限。最后，我们展示了SSE在未来热电应用的各种器件结构中的初步演示，并讨论了基于SSE的热电技术的前景。
The spin Seebeck effect (SSE) refers to the generation of a spin current as a result of a temperature gradient in magnetic materials including insulators. The SSE is applicable to thermoelectric generation because the thermally generated spin current can be converted into a charge current via spin-orbit interaction in conductive materials adjacent to the magnets. The insulator-based SSE device exhibits unconventional characteristics potentially useful for thermoelectric applications, such as simple structure, device-design flexibility, and convenient scaling capability. In this article, we review recent studies on the SSE from the viewpoint of thermoelectric applications. Firstly, we introduce the thermoelectric generation process and measurement configuration of the SSE, followed by showing fundamental characteristics of the SSE device. Secondly, a theory of the thermoelectric conversion efficiency of the SSE device is presented, which clarifies the difference between the SSE and conventional thermoelectric effects and the efficiency limit of the SSE device. Finally, we show preliminary demonstrations of the SSE in various device structures for future thermoelectric applications and discuss prospects of the SSE-based thermoelectric technologies.