Patent ID: 8334206

Claim:
Method for producing metallic interconnects lines on a surface of a substrate comprising: a. etching trenches within the substrate; b. filling the trenches using electro deposition of a metal exhibiting a crystalline lattice; c. producing a metal invasion layer, having a thickness, on top of the trenches filled with grains of metal so as to define the interconnect lines; d. determining a first direction (D.sub. 1 ) of orientation of grains along a trench and of a second direction (D.sub. 2 ) of orientation of grains in a direction perpendicular to the trench; e. determining a third direction (D.sub. 3 ) of ion channeling in the crystalline lattice of the metal; f. determining at least one direction of orientation (Di.sub. 1 , Di.sub. 2 , Di.sub. 3 ) of an ion implantation beam in the metal invasion layer, by performing the scalar products of: i. a first vector relative to the first direction (D.sub. 1 , <110>) and of a third vector relative to the third direction (D.sub. 3 , <110>); ii. a second vector relative to the second direction (D.sub. 2 , <111>) and of the third vector relative to the third direction (D.sub. 3 , 110>); and g. implanting the invasion layer by an ion beam according to one of the previously defined orientations of the ion implantation beam (Di.sub. 1 , Di.sub. 2 , Di.sub. 3 ).