THE ELECTRONIC STRUCTURE OF AG/CU(100) SURFACE ALLOYS STUDIES BY AUGER-PHOTOELECTRON COINCIDENCE SPECTROSCOPY. (open access)

THE ELECTRONIC STRUCTURE OF AG/CU(100) SURFACE ALLOYS STUDIES BY AUGER-PHOTOELECTRON COINCIDENCE SPECTROSCOPY.

We have measured the Ag and Pd M{sub 5}VV Auger spectrum in coincidence with Ag and Pd 4d{sub 5/2} photoelectrons for the Ag/Cu(100) and Pd/Cu(100) systems, respectively, as a function of admetal coverage. These systems form surface alloys (i.e. random substitutional alloys in the first atomic layer) for impurity concentrations in the 0.1 monolayer range. For these systems, the centroid of the impurity 4d levels is expected to shift away from the Fermi level by {approx}1 eV [Ruban et al., Journal of Molecular Catalysis. A 115 (1997) 421], an effect that should be easily seen in coincidence core-valence-valence Auger spectra. We find that the impurity Auger spectra of both systems shift in a manner that is consistent with d-band moving away from EF. However, the shift for Pd is considerably smaller than expected, and a shift almost absent for Ag. The disagreement between theory and experiment is most likely caused by the neglect of lattice relaxations in the calculations.
Date: October 8, 2001
Creator: Arena, D. A.; Bartynski, R. A. & Hulbert, S. L.
System: The UNT Digital Library

Oral History Interview with Ben Moody, October 8, 2003

Access: Use of this item is restricted to the UNT Community
Interview with Ben Moody, a Texas National Guard WWII veteran from Kilgore, Texas, who served with the 112th Cavalry in the Pacific. Moody discusses his family, surviving the Great Depression, his jobs and education, joining the 112th and mobilization, deployment to New Caledonia, Woodlark Island, staging at Goodenough Island, the Battle of Arawe, the Battle of Driniumor River, spending the remainder of the war in the hospital, and reflections on the 112th.
Date: October 8, 2003
Creator: Johnston, Glenn T. & Moody, Ben
System: The UNT Digital Library