Topological Electronic States and Materials
| Date/Time: | Monday, 21 Mar 2016 from 4:10 pm to 5:00 pm |
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| Location: | Physics 0003 |
| Phone: | 515-294-5441 |
| Channel: | College of Liberal Arts and Sciences |
| Actions: | Download iCal/vCal | Email Reminder |
Abstract
The rapid development of the field of topological states is both due to conceptual theoretical advances and to the discoveries of realistic materials where these exotic states can be hosted. First principles calculations play important roles in this field. On the theoretical front, the calculations and understanding of Berry curvature and gauge field established the connection between topology and electronic structures. On the experimental side, most of materials discovered up to now in this field are stimulated by computational predictions. In this talk, I will review recent progresses in this field, with focus on topological semimetal, a new state of quantum matters that differ from topological insulators. I will discuss some materials, including Dirac semimetals (Na3Bi and Cd3As2) and Weyl semimetals (HgCr2Se4 and TaAs), and address some recent theoretical and experimental results.
Bio
FANG received his PhD degree from the Hua-Zhong University of Sci. & Tech. of China in 1996. He visited the AIST of Japan and ORNL in USA from 1996 to 2003, and then joined the Institute of Physics (IoP), Chinese Academy of Sciences (CAS), in 2003. He is now a distinguished professor and serving as the deputy director of IoP. His research interests are mostly on computational condensed-matter physics, correlated electron systems, and topological electronic states. He is an APS Fellow, and was the recipient of ICTP prize (Italy) in 2008.