Two-photon photoemission from adsorbate-induced states: Atomic oxygen on Cu(111)
- 16 March 1987
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 58 (11), 1135-1138
- https://doi.org/10.1103/physrevlett.58.1135
Abstract
Two-photon photoemission is observed from unoccupied and occupied states of atomic oxygen adsorbed on Cu(111). The unoccupied state is found as an intermediate in the two-photon process with an energy of 2.79±0.07 eV above the Fermi level. The occupied state is excited by two photons and has a binding energy of 2.13±0.04 eV below the Fermi level.Keywords
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