Accession Number : ADA299420

Title :   Superconductivity of Fullerenes and Scanning Tunneling Microscopy of Novel Superconductors.

Descriptive Note : Final rept. 1 Jul 92-30 Jun 95,

Corporate Author : STANFORD UNIV CA

Personal Author(s) : Beasley, M. R. ; Geballe, T. H.

PDF Url : ADA299420

Report Date : 24 AUG 1995

Pagination or Media Count : 3

Abstract : This work examines the electronic structure of new fullerene compounds by the combination of in situ transport measurements as a function of temperature and photoemission spectroscopy. In particular, we have grown thin films of cerium fullerides, Ce(x)C60, 0.5<x<l3, by co-evaporation of multiple molecular beam sources. Resistivity as a function of temperature showed activated transport as a function of temperature at all compositions between 9 and 300 kelvins. Core level photoemission spectroscopy showed weak hybridization of Ce 4f orbitals with the valence band for x<11 and strong hybridization at high cerium concentration. Valence band photoemission spectroscopy shows electronic correlation effects. jg p.1

Descriptors :   *SCANNING ELECTRON MICROSCOPES, *SUPERCONDUCTORS, *FULLERENES, *CERIUM, *SUPERCONDUCTIVITY, ELECTRONICS, SOURCES, MEASUREMENT, ACTIVATION, HIGH RATE, CORES, SPECTROSCOPY, RESISTANCE, TUNNELING(ELECTRONICS), ELECTRONIC SCANNERS, THIN FILMS, ELECTRONIC EQUIPMENT, MOLECULAR BEAMS, PHOTOELECTRIC EMISSION, VALENCE BANDS, TRANSPORT, CONCENTRATION(COMPOSITION), EMISSION SPECTROSCOPY, LOW STRENGTH, MULTIPLE BEAMS(RADIATION), PHOTOGRAPHS, CORRELATORS, HYBRIDIZATION.

Subject Categories : Inorganic Chemistry
      Physical Chemistry
      Electricity and Magnetism
      Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE