Semiconductor Tunneling, Bound Levels and Band Structure
Bound levels due to quantum size effects in solids exist in a variety of physical systems. These include space-charge layers at semiconductor surfaces, thin films, and thin films bounded by solid-solid interfaces such as the normal metal-superconductor interface, the semiconductor-semiconductor interface, or the semiconductor-insulator interface. The discovery of such bound levels and the determination of their splitting were in most cases accomplished by utilizing the electron tunneling technique. This talk gives a survey of the experimental studies of bound levels and the related band structure effects by electron tunneling.