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Resonance photoemission at the 2p excitation threshold of Ni{sub 3}Al

Book ·
OSTI ID:474586
 [1]; ;  [2]
  1. National Chang-Hua Univ. of Education (Taiwan, Province of China). Dept. of Physics
  2. Synchrotron Radiation Research Center, Hsinchu (Taiwan, Province of China)
A marked resonance enhancement of the 3d photoemission intensity in angle-integrated electron-distribution curves from Ni{sub 3}Al has been observed 6.6 eV below the Fermi level for photon energies in the vicinity of the Ni 2p absorption threshold. Soft x-ray L-edge absorption spectra were measured to determine the Ni 2p excitation threshold. The Fano asymmetry parameter and the effective Coulomb interaction for Ni{sub 3}Al are 2.2 and 4.8 eV, respectively, as derived from the experimental data. Differences between the 2p {r_arrow} 3d and the 3p {r_arrow} 3d resonance effect are discussed, and comparisons with Ni, NiAl, and NiGa are made.
Sponsoring Organization:
National Science Council, Taipei (Taiwan, Province of China)
OSTI ID:
474586
Report Number(s):
CONF-960401--; ISBN 1-55899-340-1
Country of Publication:
United States
Language:
English