Irregular stacking sequence in the initial growth of ultrathin Rh films on Ru(0001)
- Physikalisch Chemisches Institut, Justus-Liebig-Universitaet Giessen, Heinrich-Buff-Ring 58, 35392 Giessen (Germany)
- Physikalisch Chemisches Institut, Universitaet Zuerich, Winterthurerstrasse. 190, CH-8057 Zurich (Switzerland)
Rhodium grows on single-crystal Ru(0001) surface initially layer by layer, adapting the in-plane lattice parameters of Ru(0001) (pseudomorphic growth). Using quantitative low-energy electron diffraction (LEED) and density functional theory (DFT) calculations, we determined the atomic structures of 1-monolayer (ML), 2-ML, and 3-ML Rh films on Ru(0001). The 1-ML Rh film continues the hexagonal-close-packed (hcp) stacking sequence of Ru(0001) (...ABAb), while the 2-ML Rh film already adopts its face-centered-cubic (fcc) stacking sequence (...ABAbc) if the topmost Ru layer is included into the stacking consideration. Three MLs of Rh form a fcc stacking sequence of ...ABAbac, requiring a massive restructuring of the second Rh layer when adding one ML of Rh onto the 2-ML Rh film.
- OSTI ID:
- 20719344
- Journal Information:
- Physical Review. B, Condensed Matter and Materials Physics, Vol. 72, Issue 7; Other Information: DOI: 10.1103/PhysRevB.72.075432; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1098-0121
- Country of Publication:
- United States
- Language:
- English
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