As a young enough area in modern physics a spin transport electronics (spintronics) attracts more and more researchers by its promising practical applications. The devices created on the basis of spintronics promise to solve existing and expected to appear in the near future problems of traditional microelectronics: power independence, reduction of power consumption, increase in density of logic elements and speeds of data processing. Modern microelectronic devices are based on charging current. The spintronic instrument is the electric current with unidirectional spins (a spin current).

It is supposed, that spintronic devices will have greater speed and smaller energy of switching. This sphere of nanotechnology promises to lead to creation of the tiny electronic devices, which are essentially distinct from modern, possessing high speed, the small sizes and small power consumption.

In the given work principles of a work of spin-electronic transistor on the basis of ferromagnets and silicon are discussed.