Joule heating-induced coexisted spin Seebeck effect and spin Hall magnetoresistance in the platinum/Y3Fe5O12 structure

Joule heating-induced coexisted spin Seebeck effect and spin Hall magnetoresistance in the platinum/Y3Fe5O12 structure
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铂/Y3Fe5O12结构中焦耳热引起的自旋塞贝克效应和自旋霍尔磁阻共存

DOI:
10.1063/1.4901101
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发表时间:
2014-11
影响因子:
4
通讯作者:
Sun J.R.
Sun J.R.
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Zou L.K.;Cai J.W.;Sun Z.G.;Sun J.R.

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在Pt/Y3 Fe 5 O 12混合结构中,当焦耳加热产生热梯度时,同时观察到自旋Seebeck效应(SSE)和自旋Hall磁电阻(SMR)。根据它们对外加电流的依赖性,这两种效应可以分离。系统地研究了它们对加热功率和磁场的依赖性。随着加热功率的增大,SSE线性增大,SMR缓慢减小。进一步分析了自旋流的起源。与SSE和SMR相关的自旋电流的加热功率依赖性被发现是不同的。
Spin Seebeck effect (SSE) and spin Hall magnetoresistance (SMR) are observed simultaneously in the Pt/Y3Fe5O12 hybrid structure when thermal gradient is produced by Joule heating. According to their dependences on applied current, these two effects can be separated. Their dependence on heating power and magnetic field is systematically studied. With the increase of heating power, the SSE enhances linearly, whereas the SMR decreases slowly. The origin of the spin currents is further analyzed. The heating power dependences of the spin currents associated with the SSE and the SMR are found to be different.
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