Influence of Vacancy Defect on Surface Feature and Adsorption of Cs on GaN(0001) Surface

Figure 1

2×2 GaN(0001) surface: (a) side view of Ga vacancy defect surface, (b) side view of N vacancy defect surface, (c) top view of Ga vacancy defect surface, and (d) top view of N vacancy defect surface. Ga and N atoms are marked.

(a)

(b)

(c)

(d)