The Electronic Structure of Metal Lithium at High Pressures

This paper has evaluated the energy bands using the orthogonalized plane wave method and has calculated the density-of-states as well as the Fermi energy by the nearly free electron model for metal lithium at pressures of 0, 2, 4 GPa. The energy and the density-of-states in the region close to the Fermi surface rise evidently as the pressure increase. The higher the pressure, the more the Fermi surface is distorted from the sphere characteristic of the free electron.