FEMTOSECOND DYNAMICS OF ELECTRONS ON SURFACES AND AT INTERFACES
- 1 October 1997
- journal article
- Published by Annual Reviews in Annual Review of Physical Chemistry
- Vol. 48 (1) , 711-744
- https://doi.org/10.1146/annurev.physchem.48.1.711
Abstract
▪ Abstract Two-photon photoemission is a promising new technique that has been developed for the study of electron dynamics at interfaces. A femtosecond laser is used to both create an excited electronic distribution at the surface and eject the distribution for subsequent energy analysis. Time- and momentum-resolved two-photon photoemission spectra as a function of layer thickness fully determine the conduction band dynamics at the interface. Earlier clean surface studies showed how excited electron lifetimes are affected by the crystal band structure and vacuum image potential. Recent studies of various insulator/metal interfaces show that the dynamics of excess electrons are largely determined by the electron affinity of the adsorbate. In general, electron dynamics at the interface are influenced by the substrate and adlayer band structures, dielectric screening, and polaron formation in the two-dimensional overlayer lattice.Keywords
This publication has 79 references indexed in Scilit:
- TWO-PHOTON PHOTOEMISSION SPECTROSCOPY OF IMAGE STATESPublished by Elsevier ,1995
- Electron dynamics at surfacesSurface Science Reports, 1995
- Fundamental Mechanisms of Desorption and Fragmentation Induced by Electronic Transitions at SurfacesAnnual Review of Physical Chemistry, 1989
- Image-Potential States Observed by Inverse PhotoemissionPhysical Review Letters, 1984
- Image-potential states and energy-loss satellites in inverse photoemission spectraPhysical Review B, 1983
- Direct Spectroscopic Observation of Electrons in Image-Potential States Outside Liquid HeliumPhysical Review Letters, 1974
- On the Surface States Associated with a Periodic PotentialPhysical Review B, 1939
- Electronic states at the surfaces of crystalsMathematical Proceedings of the Cambridge Philosophical Society, 1939
- Electronic states at the surfaces of crystalsMathematical Proceedings of the Cambridge Philosophical Society, 1939
- Die Oberflächenwellen in der Elektronentheorie der MetalleThe European Physical Journal A, 1935