Patent ID: 8233315
Filing Date: 2012-07-31
Classification: H01L,Y10S

Abstract:
1. A spin field-effect transistor, comprising: a source including a first semiconductor material having an amorphous or polycrystalline structure, a second semiconductor material having a single crystalline structure, and a spin-polarizing ferromagnetic material interposed between the first and second semiconductor materials, a first Schottky barrier formed by the first semiconductor material and the spin-polarizing ferromagnetic material being higher than a second Schottky barrier height formed by the spin-polarizing ferromagnetic material and the second semiconductor material, charge carriers having random spin from the first semiconductor material traversing the spin-polarizing ferromagnetic material, and spin-polarized charge carriers being injected from the spin-polarizing material into the second semiconductor material; a drain; a channel electrically connecting the source and the drain; and a gate configured for controlling conductivity of spin-polarized elements through the channel.