Enhancement of spin-Seebeck voltage by spin-Hall thermopile
Enhancement of spin-Seebeck voltage by spin-Hall thermopile
复制标题
自旋霍尔热电堆增强自旋塞贝克电压
DOI：
10.1143/apex.5.093001
复制
发表时间：
2012
影响因子：
2.3
通讯作者：
and E. Saitoh
中科院分区：
文献类型：
--
作者：
K. Uchida;T. Nonaka;T. Yoshino. T. Kikkawa;D. Kikuchi;and E. Saitoh
由自旋塞贝克效应（SSE）引起的电压信号被证明是通过引入由两种不同的金属与正负自旋霍尔角的热电堆结构，以增强。在”自旋霍尔热电堆”中，金属中的正负SSE信号被串联添加到输出电压。在这里，我们表明，Pt/Nb热电堆上的Y3 Fe 5 O 12（YIG）板表现出SSE电压一个数量级以上的平原Pt/YIG系统。由于自旋霍尔热电堆能够以通用的方式灵敏地检测自旋电压，因此它将用于构造自旋和热传感器。
Voltage signals induced by the spin-Seebeck effect (SSE) are shown to be enhanced by introducing a thermopile structure consisting of two different metals with positive and negative spin-Hall angles. In the" spin-Hall thermopile", the positive and negative SSE signals in the metals are added to the output voltage in series. Here, we demonstrate that a Pt/Nb thermopile on an Y 3 Fe 5 O 12 (YIG) slab exhibits the SSE voltage one order of magnitude greater than that in a plain Pt/YIG system. Since the spin-Hall thermopile enables sensitive detection of a spin voltage in a versatile manner, it will be useful to construct spin and heat sensors.