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BANDSTRUCTURE AND LOCALIZED DESCRIPTIONS OF NARROW-BAND SYSTEMS

Almbladh, Carl-Olof LU (1988) 184. p.81-89
Abstract
In this note I would like to give some personal views on the relevance of bandstructure treatments of narrow-band systems. At first sight one might think that bandstructure theory is not a very appropriate framework for quasi-localized electrons. Nevertheless, it has been found that density-functional (DF) theory in its modern form gives a rather impressive description of ground-state properties for the majority of systems, not only " in principle " but also in practice via calculations based on the local-density approximation (LDA). I will here discuss some key concepts in DF theory with emphasis on physical significance of the eigenvalues which appear in the DF one-electron-like equations. I will also to some extent discuss the dynamical... (More)
In this note I would like to give some personal views on the relevance of bandstructure treatments of narrow-band systems. At first sight one might think that bandstructure theory is not a very appropriate framework for quasi-localized electrons. Nevertheless, it has been found that density-functional (DF) theory in its modern form gives a rather impressive description of ground-state properties for the majority of systems, not only " in principle " but also in practice via calculations based on the local-density approximation (LDA). I will here discuss some key concepts in DF theory with emphasis on physical significance of the eigenvalues which appear in the DF one-electron-like equations. I will also to some extent discuss the dynamical selfenergy Σ, which describes the " one-electron " excitations reached by adding or removing an electron, although there is very little work done for narrow-band electrons. (Less)
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
host publication
Narrow-Band Phenomena—Influence of Electrons with Both Band and Localized Character
editor
Fuggle, John C. ; Sawatzky, George A. and Allen, J. W.
volume
184
pages
81 - 89
publisher
Plenum (Springer)
ISBN
978-1-4684-5561
language
English
LU publication?
yes
id
ee6f253b-eb14-4f1d-98d4-05b819e9e8ae (old id 8774002)
date added to LUP
2016-04-04 11:38:08
date last changed
2018-11-21 21:06:09
@inbook{ee6f253b-eb14-4f1d-98d4-05b819e9e8ae,
  abstract     = {{In this note I would like to give some personal views on the relevance of bandstructure treatments of narrow-band systems. At first sight one might think that bandstructure theory is not a very appropriate framework for quasi-localized electrons. Nevertheless, it has been found that density-functional (DF) theory in its modern form gives a rather impressive description of ground-state properties for the majority of systems, not only " in principle " but also in practice via calculations based on the local-density approximation (LDA). I will here discuss some key concepts in DF theory with emphasis on physical significance of the eigenvalues which appear in the DF one-electron-like equations. I will also to some extent discuss the dynamical selfenergy Σ, which describes the " one-electron " excitations reached by adding or removing an electron, although there is very little work done for narrow-band electrons.}},
  author       = {{Almbladh, Carl-Olof}},
  booktitle    = {{Narrow-Band Phenomena—Influence of Electrons with Both Band and Localized Character}},
  editor       = {{Fuggle, John C. and Sawatzky, George A. and Allen, J. W.}},
  isbn         = {{978-1-4684-5561}},
  language     = {{eng}},
  pages        = {{81--89}},
  publisher    = {{Plenum (Springer)}},
  title        = {{BANDSTRUCTURE AND LOCALIZED DESCRIPTIONS OF NARROW-BAND SYSTEMS}},
  volume       = {{184}},
  year         = {{1988}},
}