时间：2019-12-19  14:00-16:00

地点：IRC 425

报告题目：《反铁磁绝缘体的电输运测量》

报告摘要：

Spin Hall magnetoresistance (SMR) was discovered in Pt/YIG bilayer, and has been used as a unique probe of the Neel vector of antiferromagnetic insulator in recent studies. In this talk, the speaker will discuss the SMR in in Pt/NiO/YIG structures in a wide range of temperature and NiO thickness. The SMR shows a negative sign below a temperature that increases with the NiO thickness. This is contrary to a conventional SMR theory picture applied to the Pt/YIG bilayer, which always predicts a positive SMR. Besides delivering a quantitative explanation of such anomaly by using SMR of antiferromagnetic insulator/Pt interface, the speaker will also introduce the recent controversy on the SMR measurement in antiferromagnetic spintronics.

报告人简介：

侯达之博士，现任职于中国科学技术大学，微尺度物质科学国家研究中心，特任研究员。本科毕业于复旦大学物理系，后于2007-2013年间，师从复旦大学金晓峰教授攻读博士学位。博士毕业后，于日本东北大学Eiji Saitoh教授组，2013-2019年间先后担任博士后与助教。主要从事电子自旋和磁性有关的电输运研究，在反铁磁材料中的自旋输 运、以及反常霍尔效应研究两方面取得了一定的成果。国际重要学术期刊上已发表论文共23篇，其中第一作者或通讯作者文章9篇，包括Nature Materials 1篇，Physical Review Letters 2篇，Nature Communications 2篇，NPG Asia Materials 综述论文1篇，总引用数951次（Google Scholar）。 同时担任 Nature Physics, Nature Communications, Physical Review Letters 等重要杂志审稿人。