1. Institute for Metallic Materials, Leibniz Institute for Solid State and Materials Research Dresden (IFW Dresden), Helmholtzstraße 20, 01069 Dresden, Germany
2. Center for Hybrid Nanostructures, Universität Hamburg, Luruper Chaussee 149, 22607 Hamburg, Germany
3. Insitute of Material Science, Technical University Dresden, Helmholtzstraße 10, 01069 Dresden, Germany