Patent ID: 7262500

Claim:
An interconnection structure formed by burying a metal film in a depression, such as a trench or a hole, formed in a substrate, said metal film comprising a single crystal-like crystal metal film, said single crystal-like metal film being formed by: making a film formation reaction and an etching reaction coexistent, said film formation reaction being a reaction in which a precursor comprising a metallic component and a source gas is adsorbed onto the substrate, and then the metallic component is deposited to form a metal film of a metal of the metallic component, and said etching reaction being a reaction in which the metal film formed by said film formation reaction is etched with a plasma of the source gas; and exercising control such that a speed of said film formation reaction is higher than a speed of said etching reaction, thereby stacking the metal film as a single crystal-like crystal in the depression sequentially, starting at a bottom of the depression.