Relation between growth conditions and reconstruction on InAs during molecular beam epitaxy using an As2 source

Abstract
We have studied the growth of InAs by molecular beam epitaxy using an As2 source and have determined the growth conditions at which the surface changes from arsenic stable to indium stable. We conclude that the governing parameter is not the flux ratio, but rather the flux difference, i.e., the absolute amount of excess arsenic supplied. We propose a model to explain this behavior.