The Surface Continuum in Inverse Photoemission

Bruhwiler, P. A.; Watson, G. M.; Plummer, E. W.; Sagner, H.-J.; Frank, K.-H.

doi:10.1209/0295-5075/11/6/015

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The Surface Continuum in Inverse Photoemission

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Sagner, H.-J.
Fritz Haber Institute, Max Planck Society;

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Frank, K.-H.
Fritz Haber Institute, Max Planck Society;

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Citation

Bruhwiler, P. A., Watson, G. M., Plummer, E. W., Sagner, H.-J., & Frank, K.-H. (1990). The Surface Continuum in Inverse Photoemission. EPL, 11(6), 573-579. doi:10.1209/0295-5075/11/6/015.

Cite as: https://hdl.handle.net/21.11116/0000-0006-FF1E-B

Abstract

A series of submonolayer coverages of alkali metals on Be(0001) is used to vary the position of the vacuum level (E_V) systematically, and the steplike contribution to the inverse photoemission (IPE) spectrum at E_V is found to shift uniformly with EV. Steplike intensity onset at E_V is common to almost all IPE spectra from metals in normal incidence, and is observed with a cross-section similar in magnitude to many bulk-derived features. We assign the step to emission into surface continuum final states. The available data on the energy dependence of the cross-section of this emission indicates that an unexplored mechanism is responsible.