Semiconductor device having a nickel silicide layer on a single crystal silicon layer

A semiconductor device includes: a first MOSFET including: first source and drain regions formed at a distance from each other in a first semiconductor region; a first insulating film formed on the first semiconductor region between the first source region and the first drain region; a first gate electrode formed on the first insulating film; a first sidewall insulating film formed at side portions of the first gate electrode; a first single-crystal silicon layer formed on each of the first source and drain regions, and having at least an upper-face made of a {111} plane; a first NiSi layer formed at least on the first single-crystal silicon layer, and having a portion whose interface with the first single-crystal silicon is on the {111} plane of the first single-crystal silicon layer and a part of the portion of the first NiSi layer being in contact with the first sidewall insulating film; and a first TiN film being in contact with the portion of the first NiSi layer on the {111} plane of the first single-crystal silicon.