Department of Physics, NCU
Title
Interlayer couplings and manipulation of long-range magnetic orderings in two-dimensional materials
Speaker
Prof. JI, Wei
Department of Physics, Renmin University of China
Date 2017.11.21 (Tue)
Time 10:00
Place S4-625
Abstract: In this talk, I summarize our recent progress on the modelling of interlayer interactions of various two-dimensional materials, e.g. weakened van der Waals interaction in twisted graphene1 and ReS22, covalent-like quasi-bonding in PtS23/PtSe24, black phosphorus5,6,7 and alpha-Tellurium8, and subtle balance between inter- and intra-layer interactions in organic molecules9,10. In addition, few-layer CrS2 was predicted switchable between ferromagnetic and anti-ferromagnetic orderings11.
Short bio:
Dr. JI, Wei is a computational physicist, working in the field of surface and interface modeling of low-dimensional materials. His research interests include surface and interface modeling of emerging electronic materials and devices. Recently, he focuses on theoretical modeling of electronic, optical, and vibrational properties of two-dimensional materials. He has been also developing theoretical methods for describing beam effects in scanning transmission microscopy and understanding ultrahigh resolution in noncontact atomic force microscopy. He received his Ph.D in condensed matter physics from the Institute of Physics, Chinese Academy of Science in 2008. Prior to joining Renmin University of China, he spent four years in McGill University as a visiting scholar and then a postdoctoral fellow. He was originally appointed as an Associated Professor by Renmin University in 2010 and was early promoted to Full Professor in 2014. He was supported by the National Young Top-Notch Talent Program in 2014 and the National Science Fund for Excellent Young Scholars in 2016, and awarded Chang-Jiang Young Scholars in 2015. He also serves as trustees in the youth committee and computational materials science division of the Chinese Materials Research Society.