Abstract
The linewidths of - and -band derived electronic quantum-well states in thin films of Ag on Fe(100) are measured as a function of temperature to yield the electron-phonon coupling parameters. The results vary by a factor of up to 35 among the different states. The origin of these huge differences is traced to the decay path selection for the various initial states of the holes created by the photoemission process. The electron-phonon coupling parameter for the top -band quantum-well state, , is the smallest ever reported.
- Received 17 November 2003
DOI:https://doi.org/10.1103/PhysRevLett.92.186803
©2004 American Physical Society