ABSTRACT
Before we start discussing details of the Hall effect, the magnetoresistance effect, and of the corresponding devices, we shall pass here quickly through a few general sections of semiconductor physics. Our aim is to refresh our understanding of some basic properties of semiconductors. For example, we shall see how and why quasi-free electron and hole concentrations in semiconductors depend on temperature and doping, and how charge transport phenomena, such as drift and diffusion, operate in the absence of a magnetic field. The physical phenomena that underline these properties are also basic to the galvanomagnetic effects.
