题目：Symmetry controlled optical and magnetic properties in 2D antiferromagnets

　　报告人：肖笛 教授（Carnegie Mellon University, USA）

　　时  间：2017年7月11日(周二)上午10:00

　　地  点：best365注册 中心教学楼610

　　Abstract:

　　Layered magnets have emerged as a new focal point in current 2D material research due to the possibility of hosting magnetism in their thin-film limit. In this talk, I will discuss some symmetry controlled properties of 2D antiferromagnets. I will first show that magneto-optic effects can be generated and manipulated by controlling crystal symmetries through a gate voltage in layered collinear antiferromagnets. I will then show that the intrinsic symmetry of honeycomb antiferromagnets also allows a magnon spin Nernst effect. These properties would be useful for novel spintronic devices.  If time allows, I will also discuss a novel spin mechanical effect in antiferromagnets.

　　Biosketch:

　　Prof. Di Xiao received his B.S. degree in physics from Peking University in 2001, and a Ph.D. at the University of Texas at Austin in 2007.  He then worked at Oak Ridge National Laboratory, first as a postdoc, then a staff member in the Materials Science and Technology Division.  In 2012, he joined Carnegie Mellon University and is now an associate professor in the Physics Department.  Prof. Xiao has published over 70 papers, including 20 in Physical Review Letters, 1 in Nature, 13 in Nature sub journals, 2 in Science Advance, and 1 in Review of Modern Physics.  His papers have been cited over 10,000 times.  Prof. Xiao is the recipient of the Cottrell Scholar Award by the Research Corporation for Science Advancement in 2016.  More information about his research can be found at https://www.andrew.cmu.edu/user/dixiao

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