Nanoscale spatial phase modulation of GaAs growth in V-grooved trenches on Si (001) substrate

Li Shi-Yan, Zhou Xu-Liang, Kong Xiang-Ting, Li Meng-Ke, Mi Jun-Ping, Wang Meng-Qi, Pan Jiao-Qing^†,

Panels (a) and (b) are the FFT patterns corresponding to regions inside white box 1 and 2, respectively. They reveal two kinds of diffraction patterns: hexagonal and cubic crystal structures.