High resolution electron energy loss studies of surface vibrations

New experimental studies of surface vibrational properties of materials with high-resolution electron energy loss spectroscopy (EELS) are reported. This document summarizes recent progress on surface phonon dispersion measurements on copper (001); silver (001) and (111); oxygen adsorption on ultrathin films of cobalt and nickel; aluminum on silicon (111); and copper-oxide based superconductors

High resolution electron energy loss studies of surface vibrations. Final report, August 1, 1984--October 31, 1995

This document summarizes technical progress made on `High Resolution Electron Energy Loss Studies of Surface Vibrations` (DE-FG02-84ER45147). The project was concerned with the measurement of surface vibrational waves (phonons) on a variety of materials, in particular the dispersion of these waves at short wavelengths. The principal experimental method employed was high-resolution electron energy loss spectroscopy (EELS) at an energy resolution of {approximately} 5 MeV (40 cm{sup {minus}1}) and momentum resolution of {approximately} .02{Angstrom}{sup {minus}1}. New experimental information on a variety of metals, overlayer structures, ultrathin films and copper oxide materials were obtained as summarized in the document. 27 refs., 1 fig