COMPLEX DIELECTRIC-CONSTANT OF 2-DIMENSIONAL WANNIER EXCITONS

Authors
TANGUY C
Citation
C. Tanguy, COMPLEX DIELECTRIC-CONSTANT OF 2-DIMENSIONAL WANNIER EXCITONS, Solid state communications, 98(1), 1996, pp. 65-68
Citations number
26
Categorie Soggetti
Physics, Condensed Matter
Journal title
Solid state communications → ACNP
ISSN journal
00381098
Volume
98
Issue
1
Year of publication
1996
Pages
65 - 68
Database
ISI
SICI code
0038-1098(1996)98:1<65:CDO2WE>2.0.ZU;2-C
Abstract
The complex dielectric constant of 2D Wannier excitons is calculated a nalytically, with the contributions of ail bound and unbound states ta ken exactly into account. This expression may be helpful as a limiting case for quantum well structures, and for the description of the opti cal properties of saddle-point excitons, including an improved treatme nt of dispersion effects.