Silicene on substrates: A theoretical perspective

Zhong Hong-Xia^a),^c)†, Quhe Ru-Ge^a),^d),^e),^f)†, Wang Yang-Yang^a),^g)†, Shi Jun-Jie^a), Lü Jing†‡^a),^b)

(a) Free-standing silicene band structure, in which the π and π * bands degenerate at E _f. (b) and (c) Projected band structures of silicene/Ag (111) composite systems. Red dots and gray dots represent the states contributed by Ag and Si atoms, respectively. The intensity of the color is proportional to the weight of the corresponding atoms. Black squares indicate those states probably contributed from the π ( π *) bands of silicene. E _f is set to be zero. (For the further implications of color in this figure, the readers can refer to the web version of this article) (Reproduced with permission from Ref. [ 40 ]. Copyright 2014 North-Holland).