Atomic hydrogen chemisorption on the Si(111) 7×7 surface

Abstract

Chemisorption of atomic hydrogen on the Si(111) 7×7 surface was investigated using scanning tunneling microscopy. Contrary to the recent report by Golovchenko’s group that the monohydride phase is not stable even at room temperature, resulting in the formation of the trihydride phase, our scanning tunneling microscopy (STM) experiment has shown that the monohydride phase is indeed the stable phase on the clean Si(111) 7×7 surface.