Evidence for a New Broadening Mechanism in Angle-Resolved Photoemission from Cu(111)
- 14 February 1983
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 50 (7) , 526-529
- https://doi.org/10.1103/physrevlett.50.526
Abstract
High-resolution angle-resolved photoemission measurements on the surface state on Cu(111) show that its peak width increases on approaching the Fermi energy, a result contrary to usual expectations based on final-state lifetimes. The effect is explained in terms of inherent energy and/or momentum broadening of the surface-state wave function.
Keywords
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