报告人：韩伟 博士

北京大学量子材料科学中心

报告时间：2017年10月16日，下午3:30

报告地点：知新楼C座702量子报告厅

邀请人：陈延学

摘要：

Spintronics aims to use the spin degrees of freedom for future information technologies. A key challenge for spintronics is the efficient generation of spin currents from charge currents. Recently, emergent 2D quantum materials are very attractive for spintronics since they provide new mechanisms of spin currents generation.

In this talk, I will present the spin and charge conversion in the quantum materials with non-collinear spin textures in both real and momentum spaces. The first part of my talk will discuss the spin and charge conversion in IrMn₃ with a non-collinear spin structure in its crystalline lattice. The second part of my talk will discuss the spin to charge conversion in quantum materials with spin-momentum locking properties. These two materials are the spin-momentum locked surface states of topological Kondo insulator (SmB₆) and the Rashba-split 2DEG at the complex oxides (SrTiO₃ and LaAlO₃) interface. Furthermore, the exchange coupling between the spins in the topological surface states and the magnetization in a ferromagnetic insulator will be discussed.

E-mail: weihan@pku.edu.cn

报告人简介：

    2006年获得中国科学技术大学获得本科学位。2012年1月获得University of California, Riverside物理学博士学位。2012年1月至2014 年10月在IBM Almaden Research Center进行博士后研究工作。2014 年10月至今担任北京大学量子材料科学中心研究员。主要研究方向是自旋电子学，在Nature 子刊、Science Advances、Physical Review Letters等国际知名期刊上发表了40余篇科技论文，多次受邀在美国物理协会三月会议和国际磁学与磁性材料会议上作邀请报告。2016年荣获国际纯粹与应用物理学联合会（IUPAP）青年科学家奖。

个人网页：http://www.phy.pku.edu.cn/~LabSpin/home.html