<注：本视频仅用于学术交流，版权归报告人所有>

报告题目：Oxide Interfaces Studied by Polarized Neutron Reflectometry

报告人：郭尔佳（Institute of Physics）

►

国际磁学与磁性材料大会（IEEE-MMM 2020）特邀Tutorial报告

摘要：Novel electric and magnetic properties can be achieved in materials engineered at nanometer dimensions. New functionality stems from the atomic, charge, spin or orbital structure of the interface.  With an understanding of interface structure, electric and magnetic degrees of freedom may be controlled, ideally at room temperature, to achieve synthetic magnetoelectric coupling in a nanocomposite or possibly to control spin textures in topological materials. Neutron reflectometry involves measurements of the intensity of a beam of electromagnetic radiation or particle waves reflects by a planar surface or interfaces. The intensity of the reflected radiation is directly related to the depth dependence of the index of reflection averaged over the later dimensions of the surface. Polarized neutron reflectivity (PNR) is the only means so far can directly probe the depth profile of atomic density and magnetization at the same time. Therefore, application of PNR in the low-dimensional functional materials would gain deep insight in better synthesis, engineering and control of their novel properties. In this talk, I will give several examples to use PNR to probe and in-situ control of interfacial magnetism in the quantum oxide heterostructures after a detailed introduction of PNR technique.

报告人简介：郭尔佳，中科院物理所特聘研究员，博士生导师。2012年于中科院物理研究所博士毕业后，先后在德国马普微结构物理研究所/马丁路德大学和美国橡树岭国家实验室从事博士后研究。2018年9月回到中科院物理所工作。曾获得中科院朱李月华优秀博士生奖以及美国能源部橡树岭国家实验室突出贡献奖，北京市科技新星，中国物理学会中子散射专委会优秀青年奖等。2020年任科技部国家重点研发计划(青年项目)首席科学家。主要研究方向是强关联功能薄膜和异质结在界面、畴壁等受限局域系统中外场对其物理性质的精确调控，通过人工设计和剪裁异质界面进一步拓展低维功能材料的应用。迄今共发表SCI论文90余篇，他引近1500次，H因子22，第一作者的发表文章中包括Science Advances, Adv. Mater., Adv. Funct. Mater., Phys. Rev. Lett., Phys. Rev. X等。