Quantum criticality and frustrated spin systems

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Much of modern technology, such as computer hard drives and Universal Serial Bus (USB) flash drives, is based on knowledge of condensed matter physics and materials science and the discovery of new materials and their properties. The discovery of new materials with interesting new properties may allow for more cost-effective and reliable devices. Materials synthesis lays the foundation for all other research in condensed matter physics, and materials are the linchpin for technologies ranging from the energy sector, to medical devices, to sensing, communications and information technologies. The development of next generation devices requires ceaseless exploration of new materials with design principles of multi-functional systems that possess the desired electric and magnetic properties. Discovering new quantum behavior has often been the outcome of ventures into unexplored territory with the synthesis of a new material. My research program on the growth and characterization of novel materials has the potential to significantly impact progress in this area. The proposed research program explores new quantum materials with potentially beneficial properties. The primary emphasis is on the discovery, synthesis, characterization and understanding of new classes of quantum materials. To find quantum spin-liquid states in metals, non-trivial topological states in magnetic materials, and other desirable quantum states, the research targets specific types of compounds in which the magnetic transition-metal and rare-earth ions occupy frustrated lattice geometries. My research will make important progress on these problems by focusing on a particularly clean set of model materials, in which "quantum criticality and frustrated magnetism in metals" can be exploited to tune the balance between kinetic and potential energy in a controlled way. This has the potential to reveal useful and interesting new electronic states, and will allow us to carefully test and extend our understanding of strongly interacting electron systems. The proposed program will capitalize on our achievements and collaborations, and continue to set new directions in this field. At the same time, my research program will provide an outstanding training environment for highly qualified personnel, who will become tomorrow's leaders in this area.