Patent ID: 7306993

Claim:
A method for fabricating a semiconductor device with a recessed channel, the method comprising the steps of: forming trenches for a recessed channel in an active area of a semiconductor substrate; forming a gate insulating layer on the semiconductor substrate having the trenches; forming a gate conductive layer on the entire surface of the resulting structure so that the trenches are buried; forming a silicon-rich amorphous metal silicide layer having seams on the gate conductive layer; filling the seams of the silicon-rich amorphous metal silicide layer with a metal thin film; forming a gate hard mask on the silicon-rich amorphous metal silicide layer and the metal thin film; patterning the gate insulating layer, the gate conductive layer, the silicon-rich amorphous metal silicide layer and the gate hard mask to form gate stacks; and conducting the thermal treatment of the silicon-rich amorphous metal silicide layer and the metal thin film to form a crystallized metal silicide layer.