| Issue |
Europhys. Lett.
Volume 68, Number 6, December 2004
|
|
|---|---|---|
| Page(s) | 846 - 852 | |
| Section | Condensed matter: electronic structure, electrical, magnetic, and optical properties | |
| DOI | https://doi.org/10.1209/epl/i2004-10292-4 | |
| Published online | 30 November 2004 | |
Quasiparticle properties of the possible superconductor
materials 
and 
1
Institut de Physique et de Chimie des Matériaux de Strasbourg (IPCMS) UMR 7504 du CNRS - 23 rue du Loess, 67037 Strasbourg, France
2
Groupe Matière condensée et Matériaux (GMCM), Campus de Beaulieu Bât. 11A - 35042 Rennes cedex, France
3
Department of Physics, University of California - Davis, CA 95616, USA
Received:
13
September
2004
Accepted:
22
October
2004
The quasiparticle band structures within the GW approximation of
the possible superconductors and are
presented. The GW correction to the LDA is shown to be strongly
dependent on the degree of orbital localization, and the overall
correction cannot be reproduced by a rigid band shift as in
conventional semiconductors. Precise values of the interband
transitions for high-symmetry points in the Brillouin zone are
given. The imaginary part of the self-energy which is related to
the lifetime of quasiparticles, is presented in order to be
compared with future experiments. Moreover, the ground-state
properties of and are studied and it is
shown that the bonding is partly covalent.
PACS: 71.15.Mb – Density functional theory, local density approximation, gradient and other corrections
© EDP Sciences, 2004
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.