Abstract
Low temperature and high pressure techniques are shown to be very useful tools for the study of solid state physics. We review some interesting topics related to the fundamental physics in solid state physics, focusing on insulator-metal transition, spin and charge density wave, the Kondo insulator, and others. We describe how efficiently modern observation techniques and theories were combined with high pressure and low temperature to gain insight into the properties of solids which were hindered at elevated temperatures and at normal pressure.
