BANDSTRUCTURE AND LOCALIZED DESCRIPTIONS OF NARROW-BAND SYSTEMS
(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)
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https://lup.lub.lu.se/record/8774002
- author
- Almbladh, Carl-Olof LU
- organization
- publishing date
- 1988
- 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}}, }