Image Potential States Seen via Two-Photon Photoemission and Second Harmonic Generation

, , , , , , , and

Published under licence by IOP Publishing Ltd
, , Citation K Giesen et al 1987 Phys. Scr. 35 578 DOI 10.1088/0031-8949/35/4/032

1402-4896/35/4/578

Abstract

Two new techniques for the observation of image potential states are discussed, i.e., two-photon photoemission with the image potential state as intermediate and resonant second harmonic generation with the image state as final state. Presently, two-photon photoemission provides the best energy and momentum resolution for probing image states. It is possible to achieve high enough population densities to study electron-electron interaction. An overview of experimental results is given and the prospects for observing two-dimensional electron gas phenomena are discussed.

Export citation and abstract BibTeX RIS

Please wait… references are loading.
10.1088/0031-8949/35/4/032