Head: Dr. Anna Böhmer
In many interesting materials the electronic properties are closely related to the structural properties of the crystal lattice. We use this connection in order to manipulate electronic properties. The easiest way to do this is to make use of the thermal expansion between sample and substrate. For example, glueing Co-doped CaFe2As2 onto glass substrate induces superconductivity in this otherwise non-superconducting material . Furthermore, we use piezoactors to create an uniaxial deformation. The change of the hereby modified electrical resistance, the so-called elastoresistance, can be used to determine the nematic suszeptibility of Fe-based superconductors.