Electronic excitations in beryllium chalcogenides from the ab initio GW approach

Authors
Fleszar, A Hanke, W
Citation
A. Fleszar et W. Hanke, Electronic excitations in beryllium chalcogenides from the ab initio GW approach, PHYS REV B, 62(4), 2000, pp. 2466-2474
Citations number
31
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICAL REVIEW B
ISSN journal
01631829 → ACNP
Volume
62
Issue
4
Year of publication
2000
Pages
2466 - 2474
Database
ISI
SICI code
0163-1829(20000715)62:4<2466:EEIBCF>2.0.ZU;2-3
Abstract
The one-electron excitation spectrum in BeTe, BeSe, and BeS bulk has been c alculated within the ab initio GW approach. Band structures for interacting electrons are presented together with quasiparticle lifetimes and their in elastic mean free paths. The excitation-energy dependence of self-energy sh ifts and the rate of electronic dissipation processes is studied in detail.