Electronic Structure, Chemical Bonding, Interim and Superconductivity of Silver Films ERFORMING ORG. REPORT siumSERl

96. OiSTRIBUTION STATEMENT (of this Report) Approval for public release; distribution unlimited. p fG. SUPPLEMENTARY NOTES It. dEY WORDS (Continwe on reverse aidd it necessar aid Identify by ' block niartbr) electronic structure chemical bonding superconductivity silver films on germanium 20. ADSTRACT 'Continuooni reverse side ifncessry and Identify by.180ie umber) P-The local electronic density of states and chemical bonding of a very thin Ag film on a Ge substrate have been calculated by the partitioned scattered-__ _ wave molecular-orbital method. The partial occupation o,. Ylayered'-Ag pi~k-banding molecular orbitals at the Fermi energy, resulting from covalentbanding with the Ge substrate, i~s responsible for the incipient super-conductivity recently observed by Burns et al. for very thin epitaxially grown Ag films on Ge. These orbitals are unoccupied in nonsuperconducting pure Ag. DO 1473 Eoi0no olF lov 65 5s ossoLE-I Unclassi fie