@inproceedings{2fd864da122c405d896c9c13f16a6d64,
title = "Determination of lateral interactions between NO molecules on Rh(111)",
abstract = ". In this study, the STM was used to locally study the adsorption of NO on a Rh(111) single crystal. Three new structures were identified. At 200 K, patches of the (4 × 2)-2NO and an unreported (2 × 2)-2NO structure were found at about 0.50ML coverage. Higher exposure gave rise to a (2 × 2)-3NO structure with all molecules adsorbed in the hcp sites. At 5K, a (4 × 4)-1NO structure was observed. The large separation between the molecules can only arise from repulsive interactions over a distance of at least four times the lattice constant (11 {\AA}). Here the interaction is estimated to be of the order of ~10K or ~0.1 kJ/mol. Dynamic Monte Carlo simulations taking into account adsorption, diffusion and pairwise interactions between adsorbates were used to fit the lateral interaction for the next-next nearest neighbor to the patched STM topograph at 200K for 0.50ML coverage. The value was determined to be 2 kJ/mol. Using pairwise interactions only, the (2 × 2)-3NO structure could not be explained. It might therefore be necessary to include three-particle interactions. Recent DFT calculations support this idea by showing attractive three-particle interactions.",
author = "J.H.A. Hagelaar and C.F.J. Flipse and A.P.J. Jansen",
year = "2007",
doi = "10.1088/1742-6596/61/1/076",
language = "English",
series = "Journal of Physics: Conference Series",
publisher = "Institute of Physics",
pages = "379--383",
editor = "E. Meijer and M. Hegner and H.-J. G{\"u}ntherodt",
booktitle = "Proceedings of the International Conference on Nanoscience and Technology (ICN&T 2006), 30 July - 4 August 2006, Basel, Switzerland",
address = "United Kingdom",
}