India.

Spintronics refers commonly to phenomena in which the spin of electrons in a solid state environment plays the determining role. Spintronics devices are based on a spin control of electronics, or on an electrical and optical control of spin or magnetism. This review provides a new promising science which has been strongly addressed as Spintronics, the contracted form of spin based electronics and presents selected themes of semiconductor Spintronics, introducing important concepts in spin transport, spin injection, Silsbee-Johnson spin-charge coupling, and spin dependent tunneling. Most semiconductor device systems are still theoretical concepts, waiting for experimental demonstrations