P. Heimann, F.J. Himpsel, et al.
Solid State Communications
Theoretical predictions for inverse photoemission from free-electron-like materials are tested by measurement of the energy and angle dependence of the emitted photon intensity from Al. The predicted cross-section minimum at the plasma frequency p is observed as well as a characteristic increase below p due to the inverse of the surface photoelectric effect. Above p there is an additional bulklike contribution from the radiative decay of bulk plasmons. Other materials with a well-defined plasma resonance, e.g., Ge and Si, exhibit a similar cross-section behavior. © 1988 The American Physical Society.
P. Heimann, F.J. Himpsel, et al.
Solid State Communications
D.E. Eastman, F.J. Himpsel, et al.
Journal of Applied Physics
J.E. Ortega, F.J. Himpsel, et al.
MRS Spring Meeting 1993
J.E. Ortega, F.J. Himpsel
Physical Review B