Recoil effects of photoelectrons in a solid

Details Recoil effects of photoelectrons in a solid Recoil effects of photoelectrons in a solid

2006-09-11

arxiv.org/abs/cond-mat/0609241v2

Physics

Condensed Matter

Other Condensed Matter

4 pages, 2 figures

Scientific paper

10.1103/PhysRevB.75.233404

High energy resolution C 1$s$ photoelectron spectra of graphite were measured at the excitation energy of 340, 870, 5950 and 7940eV using synchrotron radiation. On increasing the excitation energy, i.e., increasing kinetic energy of the photoelectron, the bulk origin C 1$s$ 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 M\"ossbauer effect for $\gamma$-ray emission from nuclei embedded in crystals.

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