Berry phase and associated physical effects have attracted broad attention in recent years, particularly in condensed matter physics. In this colloquium, I will begin with an exposition of the concept of Berry phase in Bloch electrons in extended solids, highlighting various materials properties derivable from Berry phase and with an emphasis on the computational aspects. Subsequently, a few examples will be discussed to demonstrate materials prediction and discovery centering on the notion of Berry phase, including valleytronics materials, quantum anomalous Hall effect and particularly our recent progress on the theory of impurity states in semiconductors.

 

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冯济，北京大学物理学院量子材料科学中心长聘期副教授。2007年康奈尔大学理论化学博士学位。之后在哈佛大学和宾夕法尼亚大学从事博士后研究。2011年加入北京大学，担任研究员、博士生导师。同年入选中组部首批“青年千人计划”。2013年获得自然科学基金委“优秀青年基金”。2015年提前获得北京大学tenure晋升。主要从事基于第一原理方法的材料模拟、代码开发和理论研究，目前主要关注贝里相位和拓扑电子态相关的问题。