RHEED patterns from zincblende MgS (100) surfaces have been observed during growth, during annealing, and both before and after irradiation of the surface with an Mg flux. The c(2 × 2) pattern is observed during growth and is stable during annealing, but a Mg flux removes it permanently. Exposing the surface to Mg at temperatures above 310 °C creates a rough 1×1 surface. Below that temperature, the surface is flatter, and a 4 × 1 reconstruction is observed with Mg irradiation, becoming a 2 × 1 reconstruction after annealing in vacuo. These results are compatable with a c(2 × 2) surface being formed from a ZnMgS alloy, which converts to a pure MgS 4 × 1 surface on Zn irradiation. The conversion from a 4 × 1 to a 2 × 1 surface results from the evaporation of excess Mg.
|Number of pages||4|
|Journal||Journal of the Korean Physical Society|
|Issue number||5 PART 2|
|Publication status||Published - Nov 2008|
- Surface reconstruction