Image states and local work function for Ag/Pd(111)
- 1 February 1993
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 70 (5) , 654-657
- https://doi.org/10.1103/physrevlett.70.654
Abstract
Two-photon photoemission spectroscopy was employed for an investigation of the image states on Pd(111) with various coverages of Ag. Image state, from areas with different thicknesses of the Ag layer can be observed simultaneously. This proves the applicability of the concept of a local work function. The decay length of the wave function of the image state on Ag(111) into the metal was determined experimentally to be 7.6±1.2 Å, and the probability to find the electron in the metal is estimated as 10%.Keywords
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