Patent ID: 7863121

Claim:
A method for fabricating a Schottky barrier tunnel transistor, the method comprising: forming a gate electrode with a layer of a first rare earth metal over a channel region of a substrate, the gate electrode providing a Schottky junction with the substrate; forming spacers over sidewalls of the gate electrode; and forming a layer of a second rare earth metal over the spacers and the substrate to produce source and drain regions in the substrate exposed on both sides of the spacers, wherein the first rare earth metal and the second rare earth metal is selected from a group consisting of: erbium (Er), ytterbium (Yb), samarium (Sm), yttrium (Y), lanthanum (La), cerium (Ce), terbium (Tb), dysprosium (Dy), holmium (Ho), thulium (Tm), and lutetium (Lu).