Excitonic effects in the Casimir force: A-exciton in CdS

Calculations of the Casimir force are performed between parallel nonlocal excitonic semiconductor slabs. Using a frequency and wave vector dependent dielectric response we describe the A n=1 excitonic transition in CdS and calculate the electromagnetic waves reflectivity in the free space between th...

Full description

Saved in:
Bibliographic Details
Published in:Solid state communications 2004-12, Vol.132 (9), p.623-626
Main Authors: Hernández de la Luz, A.D., Alvarado-García, A.F., Cocoletzi, Gregorio H., Esquivel-Sirvent, R.
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
D. Casimir
D. Dispersion
D. Excitons
Electron states
Exact sciences and technology
Excitons and related phenomena
Physics
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Calculations of the Casimir force are performed between parallel nonlocal excitonic semiconductor slabs. Using a frequency and wave vector dependent dielectric response we describe the A n=1 excitonic transition in CdS and calculate the electromagnetic waves reflectivity in the free space between the slabs. The results of the normal incidence reflectivity coefficients are then employed to determine the Casimir forces, which are investigated as functions of the layer thickness and the vacuum gap width between slabs. Comparisons with the local case show that the excitons are important as they produce a change of the Casimir force within current experimental precision.
ISSN:0038-1098
1879-2766
DOI:10.1016/j.ssc.2004.08.031