... Right: Intensity evolution as a function of coverage of the specular spot, 3D ripple, and 3D island spot (purple, blue, and redline, respectively) indicated by the dashed square and circle in (f). ... corresponding RHEED pat-terns and intensity evolution of diffraction spots are shown in Fig. 6. Like for the case of 520°C growth, within the firsttwo monolayers of Ge deposition the specular spot inten-sity ... Continuation of buffer growth, results in the appearance of faint additionaldiffraction streaks inclined by 25° to the surface normal, asindicated by the dashed lines in the RHEED pattern of Fig....