Perpendicular Transport
In this section, we study the motion of the carriers perpendicularly to the planes of the potential barriers separating quantum heterostructures. This kind of transport is often associated to quantum transmission or tunnelling, since the carriers do not need to have enough energy to surmount the barriers. When a particle goes through a potential barrier, the wave function and its derivative in the perpendicular direction must be continuous, which leads to transmitted and reflected wave...
Mosfet Structures
The main contribution to present technology in general, and microelectronics in particular, is probably the metal-oxide-semiconductor field-effect-transistor MOSFET . This device is the basic unit of present ultra-large-scale-integration ULSI microelectronics industry. It is estimated that MOSFET-based electronic devices now constitute close to 90 of the semiconductor device market. The MOSFET is formed by a MOS structure and two p-n junctions in which the n material is heavily doped Figure 5.1...