The main scientific aim of the proposed research program is to study the physical properties of unconventional superconductors, in particular those with high superconducting transition temperatures (cuprates and iron-pnictides). The key issues are addressed through intensive team work and a bottom-up approach. This begins with the synthesis and careful characterization of single crystals, continues with the application of advanced experimental probes, and culminates in a rationalization of the obtained experimental results with state-of-the-art theoretical concepts.<br/>The research will be devoted to studying the relationships between Tc and different structural parameters, the role of disorder and the electronic structure of iron-pnictides. The latter will be determined by comparing optical conductivity results with the Hall Effect and ARPES data. In addition to classifying the symmetry of the superconducting order parameter, a microscopic understanding of (incommensurate) magnetism will be sought by the application of complementary probes such as Mossbauer, NMR and neutron diffraction. Other pertinent questions related to the magnetic pseudogap, charge-lattice deformation entanglement and superconducting fluctuations will also be carefully addressed. An interesting prospect to investigate for both classes of materials is that the superconductivity develops from a Fermi liquid, which, if proven correct, would be unconventional for strongly correlated electron systems.<br/>The originality of the project lies in its multidisciplinary nature. It has been designed to establish an active synergy between material syntheses and advanced experimental techniques in the investigation of a cutting edge physical problem. Similarly, it succeeds in matching a well-qualified applicant with a top-class European institution. As such it delivers important new skills and experience to the candidate and primes him for a successful independent career within the European Research Area.