Patent ID: 8679961

Claim:
A method of manufacturing a semiconductor device which comprises a metal insulator semiconductor field effect transistor (MISFET), the method comprising: forming a gate insulating film on a semiconductor substrate; forming a gate electrode on the gate insulating film; implanting nitrogen ions equal to or more than 5.0e14 cm −2 and equal to or less than 1.5e15 cm −2 in the semiconductor substrate at both sides of the gate electrode by tilted ion implantation in a direction from an outside to an inside with respect to side surfaces of the gate electrode; depositing a metal film including nickel on areas in which nitrogen ions are implanted, the areas being in the semiconductor substrate on both sides of the gate electrode; performing a first heat processing of reacting the metal film and the areas and forming metal semiconductor compound layers; removing an unreacted metal film after the first heat processing; and performing a second heat processing at a temperature higher than a temperature of the first heat processing, wherein the temperature of the first heat processing is 275° C. or more and 350° C. or less, and the metal semiconductor compound layers after the second heat processing are NiSi (nickel silicide) phase, and facet surfaces are formed in boundaries between a channel area and the metal semiconductor compound layers.