Patent ID: 8884355

Claim:
A nonvolatile semiconductor memory device comprising: a stacked structural unit including a plurality of electrode films and a plurality of inter-electrode insulating films alternately stacked in a first direction; a first selection gate electrode stacked on the stacked structural unit in the first direction; a first semiconductor pillar piercing the stacked structural unit and the first selection gate electrode in the first direction; a first memory unit provided at an intersection of each of the plurality of electrode films and the first semiconductor pillar; and a first selection gate insulating film provided between the first semiconductor pillar and the first selection gate electrode, the first selection gate electrode including a first silicon layer having a first face perpendicular to the first direction, and a first silicide layer provided on the first face, a direction from the first silicide layer toward the first face being parallel to the first direction, wherein both of the first silicon layer and the first silicide layer contact the first selection gate insulating film, and wherein a distance between the first silicon layer and the first semiconductor pillar is the same as a distance between the first silicide layer and the first semiconductor pillar.