WFU Physics Colloquium

TITLE: Evidence for New Mesoscale Physics at Bimetallic Interfaces

SPEAKER: Professor D. Mark Riffe ,

TIME: Thursday Apr. 16, 2009 at 4:00 PM

PLACE: Room 101 in Olin Physical Laboratory

The study of bimetallic interfaces has long been driven by the possibility of tailoring surface electronic properties for chemical, catalytic, and electronics applications. In particular, interfaces formed by single monolayers of Ni, Pd, and Pt on other transition metal surfaces have garnered interest due to the dramatic changes in chemistry that occur for the group-10 metals. Our recent photoemission work on the interfaces formed by Ni, Pd, and Pt on W(110) reveals a novel interaction of Pd (vs Ni and Pt) with W(110). The photoemission spectra provided evidence for new interfacial mesoscale physics, which may have implications for both surface physical processes and surface chemistry.