Patent ID: 7964504

Claim:
A method of depositing a metal-containing material on a partially fabricated semiconductor device having a recessed feature and a field region, the method comprising: (a) positioning the partially fabricated device in a plasma physical vapor deposition (PVD) process chamber; and (b) depositing the metal-containing material on at least the bottom portion of the recessed feature at a first net deposition rate, while simultaneously depositing the material on the field region at a lower net deposition rate or while not simultaneously depositing the material on the field region, wherein (b) comprises exposing the partially fabricated device to a plasma comprising ionized metal, wherein the plasma is characterized by at least 50% fractional ionization of metal in the proximity of the partially fabricated semiconductor device and wherein mean energy of ions impacting the partially fabricated semiconductor device is less than about 70 eV throughout the deposition process.