Executive Summary : | Electron correlations are the foundation of various ground state properties in materials, including unconventional magnetism, superconductivity, heavy fermion, quantum critical phenomena, geometric and magnetic frustration, topological electronic structure, Mott insulator, and quantum spin liquid state. However, the underlying mechanism remains unexplored. Theoretical and experimental efforts are needed to understand the interplay among onsite coulomb repulsion, hybridization between atomic orbitals, electronic density of states at the Fermi level, and topologically protected band crossing in the vicinity of Fermi energy in correlated electron systems. This proposal focuses on high-quality polycrystalline synthesis and single crystal growth of materials potentially hosting correlated electron behavior. Corresponded electron materials range from intermetallics to insulating oxides. A selective approach will be made based on thermodynamic stability, melting temperature, enthalpy of formation, vapour pressure, and solubility. Intermetallics will be arc-melted in an inert argon gas atmosphere, while oxide materials will be tried primarily through solid-state reaction using a chamber furnace. Detailed physical properties, such as magnetization, electrical resistivity, optical properties, and specific heat capacity, will be explored to understand the degree of electron correlations. In metals, the inherent Fermiology experimentally explored by quantum oscillations will be correlated with band structure. A collaborative approach with research groups with expertise in large-scale facilities is crucial for developing a collective understanding of the properties in synthesized correlated electron systems. |