AN EVALUATION OF PLASMON FREQUENCY-SHIFT OBSERVED IN METALS AT LONG-WAVELENGTH LIMIT (K-]O)

Authors
SINGH BK MISHRA RK MISHRA LK
Citation
Bk. Singh et al., AN EVALUATION OF PLASMON FREQUENCY-SHIFT OBSERVED IN METALS AT LONG-WAVELENGTH LIMIT (K-]O), Indian Journal of Pure & Applied Physics, 31(12), 1993, pp. 874-879
Citations number
NO
Categorie Soggetti
Physics
Journal title
Indian Journal of Pure & Applied Physics → ACNP
ISSN journal
00195596
Volume
31
Issue
12
Year of publication
1993
Pages
874 - 879
Database
ISI
SICI code
0019-5596(1993)31:12<874:AEOPFO>2.0.ZU;2-F
Abstract
The observed negative frequency of w(pl) at k=0 for various simple met als have been evaluated using the interacting electron-plasmon picture for a system of electron gas by generalizing the Bohm-Pines method to include non-RPA effects. In order to reproduce the experimental data of the negative frequency shift at k=0, we have assumed that the plasm on spectrum has been extended to a value beyond k(c)-RPA. Our calculat ed values are in good agreement with that of the experimental result.