Many-body effects for bound states in the quasi-one-dimensional electron gas: Effects of the valley degeneracy

Authors
Calmels, L Gold, A
Citation
L. Calmels et A. Gold, Many-body effects for bound states in the quasi-one-dimensional electron gas: Effects of the valley degeneracy, PHYS ST S-B, 210(2), 1998, pp. 609-613
Citations number
16
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICA STATUS SOLIDI B-BASIC RESEARCH
ISSN journal
03701972 → ACNP
Volume
210
Issue
2
Year of publication
1998
Pages
609 - 613
Database
ISI
SICI code
0370-1972(199812)210:2<609:MEFBSI>2.0.ZU;2-U
Abstract
We study the effects of screening on the binding energy of positively and n egatively charged impurities in the quasi-one-dimensional electron gas. We assume a parabolic confinement for the electron gas. Many-body effects beyo nd the random-phase approximation and the valley degeneracy are taken into account in the screening function. Our results should apply to Si/Si1-xGex quantum wires.