Interaction of two symmetric monovacancy defects in graphene

Xu Wen-Yan^{1, 2}, Zhang Li-Zhi¹, Huang Li¹, Que Yan-De¹, Wang Ye-Liang¹, Lin Xiao¹, Du Shi-Xuan^{1, †}

STM images and corresponding simulated STM images of two vacancies in the same sublattice of graphene with different distances. (a) STM image (U = −0.8 V and I = 0.3 nA) showing two vacancies at the shortest distance. (b) STM image showing two vacancies at small distance (−0.8 V, 0.4 nA). (c) STM image (−0.8 V, 0.3 nA) showing two vacancies at long distance. (d)–(f) Corresponding simulated STM images of panels (a)–(c), respectively.