The challenge of generating iron-sulfur clusters

- The formation of iron-chalcogenide clusters is studied by sputtering of different targets.
- Insight into the influence of oxygen on the production of iron-sulfur clusters is gained.
- An increased sulfur content in the target leads to an increased sulfur content in the formed clusters.
- Oxygen contaminants do not play any role for the cluster production from pyrite targets.
- Sputtering of pyrite targets leads to the generation of pure iron-sulfur clusters.