Patent ID: 8227342

Claim:
A method of forming a field effect transistor comprising a gate formed on an insulating layer, the gate having, in a zone in contact with the insulating layer, a semiconducting central zone and lateral zones in the length of the gate, the method comprising: forming an insulating layer and a semiconducting layer over the insulating layer; performing an etching of the insulating layer and the semiconducting layer to define a portion of the insulating layer and a portion of the semiconducting layer; following the etching, forming a gate comprising the portion of insulating layer, the portion of semiconducting layer formed over the insulating layer, and a mask layer formed over the semiconducting layer; performing an etching of the mask layer such that only a portion of the mask layer in the center of the gate remains; and reacting the portion of the semiconducting layer of the gate with a metal deposited over the gate.