Electronic excitations in lithium ammonia

Authors
Burns, CA Isaacs, ED Abbamonte, P Platzman, PM
Citation
Ca. Burns et al., Electronic excitations in lithium ammonia, J PHYS CH S, 61(3), 2000, pp. 411-413
Citations number
14
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
ISSN journal
00223697 → ACNP
Volume
61
Issue
3
Year of publication
2000
Pages
411 - 413
Database
ISI
SICI code
0022-3697(200003)61:3<411:EEILA>2.0.ZU;2-K
Abstract
We have carried out inelastic X-ray scattering measurements of the plasmon in liquid lithium ammonia solutions with the composition Li(NH3)(4). We fin d a well-defined plasmon at an energy loss of approximately 2 eV, which dis plays a positive dispersion in momentum transfer q. The dispersion is reduc ed from that predicted by the random phase approximation (RPA), but is stil l larger than is predicted by some local field correction models. (C) 2000 Elsevier Science Ltd. All rights reserved.