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Photoemission beyond the sudden approximation

Almbladh, Carl-Olof LU (2006) Progress in Nonequilibrium Green's Functions III 35(1). p.127-144
Abstract
The many-body theory of photoemission in solids is reviewed with emphasis on methods based on response theory. The classification of diagrams into loss and no-loss diagrams is discussed and related to Keldysh path-ordering book-keeping. Some new results on energy losses in valence-electron photoemission from free-electron-like metal surfaces are presented. A way to group diagrams is presented in which spectral intensities acquire a Golden-Rule-like form which guarantees positiveness. This way of regrouping should be useful also in other problems involving spectral intensities, such as the problem of improving the one-electron spectral function away from the quasiparticle peak
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
many-body theory, energy losses, valence-electron photoemission, free-electron-like metal surfaces, one-electron spectral function, nonequilibrium Green's functions, quasiparticle peak, photoemission spectroscopy
host publication
Journal of Physics: Conference Series
volume
35
issue
1
pages
127 - 144
publisher
IOP Publishing
conference name
Progress in Nonequilibrium Green's Functions III
conference location
Kiel, Germany
conference dates
2005-08-22 - 2005-08-26
external identifiers
  • wos:000238978100011
  • scopus:33646503723
ISSN
1742-6588
1742-6596
DOI
10.1088/1742-6596/35/1/011
language
English
LU publication?
yes
id
64ad7572-b17c-4bff-bd1a-3c564161546c (old id 617310)
date added to LUP
2016-04-01 11:40:16
date last changed
2025-10-14 12:47:13
@inproceedings{64ad7572-b17c-4bff-bd1a-3c564161546c,
  abstract     = {{The many-body theory of photoemission in solids is reviewed with emphasis on methods based on response theory. The classification of diagrams into loss and no-loss diagrams is discussed and related to Keldysh path-ordering book-keeping. Some new results on energy losses in valence-electron photoemission from free-electron-like metal surfaces are presented. A way to group diagrams is presented in which spectral intensities acquire a Golden-Rule-like form which guarantees positiveness. This way of regrouping should be useful also in other problems involving spectral intensities, such as the problem of improving the one-electron spectral function away from the quasiparticle peak}},
  author       = {{Almbladh, Carl-Olof}},
  booktitle    = {{Journal of Physics: Conference Series}},
  issn         = {{1742-6588}},
  keywords     = {{many-body theory; energy losses; valence-electron photoemission; free-electron-like metal surfaces; one-electron spectral function; nonequilibrium Green's functions; quasiparticle peak; photoemission spectroscopy}},
  language     = {{eng}},
  number       = {{1}},
  pages        = {{127--144}},
  publisher    = {{IOP Publishing}},
  title        = {{Photoemission beyond the sudden approximation}},
  url          = {{http://dx.doi.org/10.1088/1742-6596/35/1/011}},
  doi          = {{10.1088/1742-6596/35/1/011}},
  volume       = {{35}},
  year         = {{2006}},
}