Jason Kawasaki's team uses molecular beam epitaxy (MBE) to synthesize thin films and superlattices of Heusler compounds and engineer their electronic, magnetic, thermoelectric, topological, and mechanical properties. Heusler compounds are ternary variants of the cubic (zincblende) and hexagonal (wurtzite) III-V compound semiconductors. But unlike III-Vs, they are composed of transition metals and display a diverse range of properties including both metallic and semiconducting behavior, half metallic ferromagnetism, superconductivity, heavy fermion behavior, shape memory effect, and topological behavior.