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, †}

Simulated STM images of three configurations with two vacancies in graphene. (a)–(d) Configurations shown in Fig. 1(b) with distance of 6, 9, 12, and 15 times carbon–carbon length between the two vacancies, respectively. (e)–(h) Configurations shown in Fig. 1(c) with distances of 4, 7, 10, and 13 times carbon–carbon length between the two vacancies, respectively. (i)–(l) Configurations shown in Fig. 1(d) with distances of 5, 8, 11, and 14 times carbon–carbon length between the two vacancies, respectively.