Abstract
α-gallium is the most stable phase of gallium under the normal condition. The electron density distribution of α-gallium was obtained from X-ray diffraction data. Weak covalent bonds are observed in the (100) layer and interlayer bonds are weaker than intralayer bonds. Interlayer bonds are thought to be metallic bonds. This coexistence of two types of bonds is considered to cause the pseudo gap structure of density of states.
