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) Bands of reconstructed (3×3) silicene in the absence of Ag substrate (unsupported silicene) unfolded to BZ of (1×1) silicene, shown by red dots. The radii of dots correspond to the weight of unfolding. The band structure of ideally buckled silicene is shown by green lines. (b) Unfolded band structure of silicene on Ag. Red dots refer to states with significant contribution from silicene (Reproduced with permission from Ref. [ 39 ]. Copyright 2013 American Physical Society).