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盛鹏博士学术报告会 - 1月5日
2018-01-04
报告时间：2018年1月5日，13：30 - 14:30
报告地点：光学楼525室
报告题目：Spin Nernst Effect in Tungsten
摘要：
The spin Hall effect allows the generation of spin current when charge current is passed along materials with large spin-orbit coupling. It has been recently predicted that heat current in a nonmagnetic metal can be converted into spin current-via a process referred to as the spin Nernst effect. We report the observation of the spin Nernst effect in W.In W/CoFeB/MgO heterostructures, we find changes in the longitudinal and transverse voltages with magnetic field when temperature gradient is applied across the film. The field dependence of the voltage resembles that of the spin Hall magnetoresistance. The spin Nernst angle of W to be similar in magnitude but opposite in sign to its spin Hall angle.Under an open-circuit condition, this sign difference results in the spin current generation larger than otherwise. These results highlight the distinct characteristics of the spin Nernst and spin Hall effects, providing pathways to explore materials with unique band structures that may generate large spin current with high efficiency.
Ref: Sheng et al., Science Advances, 2017;3:e1701503
报告人：盛鹏博士
单位：日本东北大学金属材料研究所
简介：
盛鹏博士2008年在复旦大学光科系获得硕士学位，2013年在大阪大学获得博士学位，2014年-2016年物质材料研究机构博士后，在此期间通过实验验证自旋能斯特效应。2016年至今，东北大学金属材料研究所博士后。