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¡¾Research¡¿BIT physicist published article on world-famous academic journal

release date £º2015-05-07 03:12:14  |   [ close window ]ViewCount£º ´Î
News Source: School of Physics
Translator: News Agency of BIT Qin Siyao
Editor: News Center of BIT  Zhao Lin



Fig.1 Cover:  demonstration of the low energy diffraction of single TMD and the light selection rule of valley dependence  
 
    Recently, BIT professor Liu Guibin and professor Yao Yugui, both from School of Physics, published an academic thesis “Electronic Structures and Theoretical Modelling of Two-dimensional Group-VIB Transition Metal Dichalcogenides” on an well-known academic journal named “Chemical Society Reviews”. This article was selected as the cover story ¡²Chem. Soc. Rev. 44, 2643 (2015)¡³. Actually, Liu accomplished the article with three other professors, namely Professor Wang Yao from Hong Kong University, Professor Di Xiao from Carnegie Mellon University and Professor Xiaodong Xu from Washington University.

    Currently, the atomically thin group-VIB transition metal dichalcogenides (TMDs) has emerged as a new class of two-dimensional (2D) semiconductors with extraordinary electronics and optical properties. Liu’s project made reviews and comments on the electronic structure of single and double TMDs in many aspects including band features, symmetry, excitonic effects, spin–orbit coupling effects, the characteristic of valley dependence and the physical attribute about Berry phase. In addition, they also summarized the current theoretical models describing two-dimensional TMD under various approximations, including k.p model and the tight-binding model. Then, Liu and his team thoroughly analyzed the characteristics and application range of these models. This paper has important theoretical reference value in understanding the electronic structure of layered materials TMD and related properties.

    Chemical Society Reviews is a top review scientific journal published by the Royal Society of Chemistry. It has a very strong academic influence in chemistry and related fields. The journal has an impact factor of 30.425.