Figure 1

Low-lying geometrical structures of BeBn (n = 10–20) clusters. “a” stands for the lowest-energy structures. “b” and “c” stand for the metastable state structures.
Low-lying geometrical structures of BeBn (n = 10–20) clusters. “a” stands for the lowest-energy structures. “b” and “c” stand for the metastable state structures.