Growth of layered wedge-shaped islands of Pb on the vicinal Si: new mechanism of twin boundary formation
Abstract
The growth of Pb on a clean vicinal Si(557) surface at room temperature was studied using the Scanning Tunneling Microscopy. We observed anisotropic tilted wedge-shaped Pb-islands to grow following the Stransky-Krastanov scenario. The elongation of the islands along the step edges of Si is associated with the anisotropic potential of the vicinal template. The observed peculiar slab-like stacking morphology of the formed wedge-shaped islands is discussed considering the substrate-induced strain, twin formation and the energy of the electron gas confined inside the islands.
- Publication:
-
Journal of Modern Trends in Physics Research
- Pub Date:
- December 2014
- DOI:
- 10.19138/mtpr/(14)73-80
- Bibcode:
- 2014JMTPR..14...73B