Survey of the Field of Magnetic Semiconductors

Magnetic semiconductors are materials with good band conductivity as well as magnetic order. Since each phenomenon requires a different description of the relevant electron states, the band structure of these materials is very complicated, containing band states as well as localized states. An important condition for strong interaction between the magnetic and the conducting electrons appears to be the existence of high densities of states at the Fermi energy, providing large carrier polarizations in the magnetized state.