Recoil effects of photoelectrons in a solid
- 12 June 2007
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 75 (23), 233404
- https://doi.org/10.1103/physrevb.75.233404
Abstract
High-energy-resolution photoelectron spectra of graphite were measured at excitation energies of 340, 870, 5950, and using synchrotron radiation. On increasing the excitation energy, i.e., increasing kinetic energy of the photoelectron, the bulk origin peak position shifts to higher binding energies. This systematic shift is due to the kinetic-energy loss of the high-energy photoelectron by kicking the atom and is clear evidence of the recoil effect in photoelectron emission. It is also observed that the asymmetric broadening increases for the higher-energy photoelectrons. All these recoil effects can be quantified in the same manner as the Mössbauer effect for -ray emission from nuclei embedded in crystals.
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