Inelastic electron scattering from a quasi-one-dimensional electron gas

Citation
Ms. Kushwaha et P. Zielinski, Inelastic electron scattering from a quasi-one-dimensional electron gas, SOL ST COMM, 112(11), 1999, pp. 605-610
Citations number
23
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
SOLID STATE COMMUNICATIONS
ISSN journal
00381098 → ACNP
Volume
112
Issue
11
Year of publication
1999
Pages
605 - 610
Database
ISI
SICI code
0038-1098(1999)112:11<605:IESFAQ>2.0.ZU;2-L
Abstract
A theoretical investigation has been made of the fast-particle energy-loss to a quasi-one-dimensional electron gas (Q1DEG) within the framework of the random-phase-approximation (RPA). For this purpose, we use an exact expres sion for the inverse dielectric function and the parabolic potential to cha racterize well the lateral confinement. Three geometries are considered: th e fast-particle moving parallel to, being specularly reflected from and sho oting through the Q1DEG. The illustrative numerical examples lead us to inf er that the dominant contribution to the loss peaks comes from the intra- a nd intersubband collective excitations. We argue that high resolution elect ron energy loss spectroscopy (HREELS) could prove to be a potential alterna tive of the existing optical techniques. (C) 1999 Elsevier Science Ltd. All rights reserved.