We have studied the morphology evolution of holed nanostructures formed by aluminum droplet epitaxy on a GaAs surface.Unique outer rings with concentric inner holed rings were observed.Further,an empirical equation to...We have studied the morphology evolution of holed nanostructures formed by aluminum droplet epitaxy on a GaAs surface.Unique outer rings with concentric inner holed rings were observed.Further,an empirical equation to describe the size distribution of the outer rings in the holed nanostructures has been established.The contour line generated by the equation provides physical insights into quantum ring formation by droplets of groupⅢmaterials onⅢ-Ⅴsubstrates.展开更多
基金The authors gratefully acknowledge the financial support by the MRSEC Program of NSF Grant(DMR-0520550).
文摘We have studied the morphology evolution of holed nanostructures formed by aluminum droplet epitaxy on a GaAs surface.Unique outer rings with concentric inner holed rings were observed.Further,an empirical equation to describe the size distribution of the outer rings in the holed nanostructures has been established.The contour line generated by the equation provides physical insights into quantum ring formation by droplets of groupⅢmaterials onⅢ-Ⅴsubstrates.
