The adsorption of Zn on the (001)-(2 x 4) surface was studied by means of reflection high-energy electron diffraction and total reflection-angle X-ray spectroscopy. The adsorption sites of Zn atoms on the (2 x 4) surface were determined by using rocking-curve analysis of the reflection high-energy electron diffraction. Exposure of the (2 x 4) surface to a Zn beam resulted in the preferred adsorption of Zn at Ga-vacancy sites in the missing dimer trenches of the (2 x 4) unit cell.

Adsorption of Zn on the GaAs(001)-(2 x 4) Surface A.Ohtake, T.Hanada, T.Yasuda, T.Yao: Applied Physics Letters, 1999, 74[20], 2975-7