X-ray standing wave study of the Sr/Si(001)-(2 x 3) surface.
Sub-monolayer surface phases of Sr on Si(0 0 1) have been studied with low-energy electron diffraction (LEED) and X-ray standing waves (XSW). A (3 x 1) phase was observed after depositing 0.6-0.8 ML Sr on room-temperature Si(0 0 1). Annealing at 750-800 {sup o}C caused a portion of the Sr to desorb and resulted in a sharp (2 x 3) LEED pattern. Normal Si(0 0 4) and off-normal Si(0 2 2) and Si(1 1 1) XSW measurements made on the (2 x 3) phase indicate that Sr atoms must sit at either cave or bridge sites. The XSW results also suggest that if a sufficiently low anneal temperature is used, the (2 x 3) phase co-exists with short-range ordered regions of Sr atoms located at valley-bridge sites.
- Research Organization:
- Argonne National Laboratory (ANL)
- Sponsoring Organization:
- SC; NSF
- DOE Contract Number:
- AC02-06CH11357
- OSTI ID:
- 961495
- Report Number(s):
- ANL/MSD/JA-48374
- Journal Information:
- Surf. Sci., Journal Name: Surf. Sci. Journal Issue: 1-2 ; Dec. 10, 2003 Vol. 547; ISSN SUSCAS; ISSN 0039-6028
- Country of Publication:
- United States
- Language:
- ENGLISH
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