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Volume Effect Photoemission: Application to Silver at Low Photon Energies
Author(s) -
Schaich W. L.
Publication year - 1974
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2220660215
Subject(s) - photon , scattering , volume (thermodynamics) , atomic physics , physics , angle resolved photoemission spectroscopy , computational physics , condensed matter physics , materials science , electronic structure , optics , quantum mechanics
A perturbative evaluation is developed of the volume effect approximation to the general elastic photoemission current. The formulae are applied to the (111) and (001) crystal faces of silver for photon energies less than 8 eV. Treating bulk and surface umklapp scattering on an equal footing, the emission efficiency of primary and secondary cones is calculated. The results are compared with experiment, and the successes and failures of the theory discussed. Several further experimental tests of the model are suggested.