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Image resonance in the many-body density of states at a metal surface

Fratesi, G, Brivio, G P, Rinke, P and Godby, R W (2003) Image resonance in the many-body density of states at a metal surface. Physical review b. 195404. -. ISSN 1098-0121

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Abstract

The electronic properties of a semi-infinite metal surface without a bulk gap are studied by a formalism that is able to account for the continuous spectrum of the system. The density of states at the surface is calculated within the GW approximation of many-body perturbation theory. We demonstrate the presence of an unoccupied surface resonance peaked at the position of the first image state. The resonance encompasses the whole Rydberg series of image states and cannot be resolved into individual peaks. Its origin is the shift in spectral weight when many-body correlation effects are taken into account.

Item Type: Article
Copyright, Publisher and Additional Information: © 2003 American Physical Society. This is an author produced version of a paper published in Physical Review B. Uploaded in accordance with the publisher's self archiving policy.
Keywords: POTENTIAL-INDUCED RESONANCES, 2-PHOTON PHOTOEMISSION, INVERSE PHOTOEMISSION, ELECTRON, SPECTROSCOPY, LIFETIMES, BARRIER
Academic Units: The University of York > Physics (York)
Depositing User: Physics Import
Date Deposited: 29 Aug 2008 15:17
Last Modified: 17 Oct 2013 14:28
Published Version: http://dx.doi.org/10.1103/PhysRevB.68.195404
Status: Published
Refereed: Yes
Related URLs:
URI: http://eprints.whiterose.ac.uk/id/eprint/4015

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