Julian J. Hsieh
Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films
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. © IOP Publishing Ltd.
Julian J. Hsieh
Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films
S.F. Fan, W.B. Yun, et al.
Proceedings of SPIE 1989
A. Gupta, R. Gross, et al.
SPIE Advances in Semiconductors and Superconductors 1990
O.F. Schirmer, W. Berlinger, et al.
Solid State Communications