Our aim is to study the details of the particles that derive material properties with an emphasis on materials exhibiting interesting magnetism and superconductivity. Electronic structure constitutes the microscopic origin of all material properties. A solid is a metal, semiconductor, insulator, superconductor or magnet is determined by the electronic interactions. Even the elastic and thermal properties depend on the electronic structure. Thus, the knowledge of the behavior of electrons in a material will provide microscopic understanding of material properties that helps material engineering to fabricate new material of technological interests in addition to the immense fundamental interests for knowledge bank.

The major technique we use is high resolution photoelectron spectroscopy (HRPES, ARPES, HRXPS, SRPES) to probe the electronic structure directly. The coupling of electrons with other electrons, lattice etc, are studied employing High Resolution Electron Energy Loss Spectroscopy (HREELS).

On theoretical front, we calculate the electronic band structure within the local density approximation (LDA) using Full potential linearized Augmented Plane Wave method (FLAPW). LDA+U approach is adopted to include the electron electron Coulomb repulsion strength, U and spin-orbit coupling to study the correlated systems.

In addition, the photoemission spectra are analyzed using various model (multiband Hubbard model, Anderson Impurity model) calculations that provide the detailed knowledge of the electronic interaction parameters.