Transition metal oxides exhibit a rich variety of physical properties such as strong correlation effects, Mott-insulator, quantum magnetism, and exotic superconductivity. NMR is a highly versatile experimental technique to probe these phenomena. In this talk, I will provide a general overview of how NMR techniques are applied to resolve both long-standing and new questions, taking some of our recent works as examples. The topics to be discussed include ballistic and diffusive spin transport in 1d systems (an old enigmatic problem since the time of de Gennes in 1960's) and exotic superconductivity in 2d.

This talk will be given in English for a general audience.