The Theory and Simulation Research Unit is formed by two Research Groups, the Laboratory of Electronic Structure of Materials (LEEM) and the Softmatter Theory (SOFTMATTER) group. Both groups have in common that they are formed by theorists instead of experimentalists. The LEEM group focuses on the phenomena happening in inorganic materials, such as oxides and magnetic materials, whereas the SOFTMATTER group focuses on biological materials and the interactions between those materials and surfaces, interfaces or nanoparticles.