Effect of initial crystallization temperature and surface diffusion on formation of GaAs multiple concentric nanoring structures by droplet epitaxy

Wang Yi^{1, 2}, Guo Xiang^{1, 2, 3}, Wei Jiemin², Yang Chen^{1, 3, 4}, Luo Zijiang^{1, 4}, Wang Jihong¹, Ding Zhao^{1, 2, 3, †}

(a) AFM image of as-grown sample with four-CNR; (b) half AFM profiles along the [110] direction; (c) h_inner/h_outer(n) versus crystallization temperature.