Picture map of Europe with pins indicating European capital cities

Open Access research with a European policy impact...

The Strathprints institutional repository is a digital archive of University of Strathclyde's Open Access research outputs. Strathprints provides access to thousands of Open Access research papers by Strathclyde researchers, including by researchers from the European Policies Research Centre (EPRC).

EPRC is a leading institute in Europe for comparative research on public policy, with a particular focus on regional development policies. Spanning 30 European countries, EPRC research programmes have a strong emphasis on applied research and knowledge exchange, including the provision of policy advice to EU institutions and national and sub-national government authorities throughout Europe.

Explore research outputs by the European Policies Research Centre...

New evidence for the influence of step morphology on the formation of Au atomic chains on vicinal Si(111) surfaces

McAlinden, N. and McGilp, J. F. (2010) New evidence for the influence of step morphology on the formation of Au atomic chains on vicinal Si(111) surfaces. EPL: A Letters Journal Exploring the Frontiers of Physics, 92 (6). -. ISSN 0295-5075

Full text not available in this repository. Request a copy from the Strathclyde author

Abstract

Gold atomic chain structures that grow on singular and vicinal Si(111) surfaces have attracted considerable interest as model systems for exploring quasi-one-dimensional metallic behaviour. The structure of the prototypical Si(111)-5 x 2-Au system remains controversial, however. Reflection anisotropy spectroscopy provides new, independent evidence supporting a recently proposed three-Au-chain structure. For stepped surfaces, the results provide good evidence that a single Au chain forms adjacent to [(1) over bar(1) over bar2] steps and a double Au chain forms adjacent to [11 (2) over bar] steps. In both cases spectral lineshape and coverage data support a three-chain Si(111)-5 x 2-Au structure forming over the remainder of the terrace. For all the vicinal Si(111) surfaces, including Si(557) and Si(775), it is the step morphology, and not the terrace width, that determines whether single- or double-Au-chain structures are formed in the region of the steps.