CONFINED AND PROPAGATING PHONONS IN ATOMIC LAYER EPITAXY-GROWN (CDTE)N(ZNTE)N SUPERLATTICES

Authors
FROMHERZ T OH E RAMDAS AK KOPPENSTEINER E BAUER G FASCHINGER W SITTER H
Citation
T. Fromherz et al., CONFINED AND PROPAGATING PHONONS IN ATOMIC LAYER EPITAXY-GROWN (CDTE)N(ZNTE)N SUPERLATTICES, Journal of crystal growth, 138(1-4), 1994, pp. 580-584
Citations number
16
Categorie Soggetti
Crystallography
Journal title
Journal of crystal growth → ACNP
ISSN journal
00220248
Volume
138
Issue
1-4
Year of publication
1994
Pages
580 - 584
Database
ISI
SICI code
0022-0248(1994)138:1-4<580:CAPPIA>2.0.ZU;2-2
Abstract
We report the occurrence of confined longitudinal and transverse optic al phonons in (CdTe)n(ZnTe)n (2 less-than-or-equal-to n less-than-or-e qual-to 5) ultra-short-period superlattices as observed in their Raman and far-infrared reflectivity spectra. The dispersion curves of the o ptical phonons in CdTe and in ZnTe along [001], determined from the fr equencies of the confined phonons, are in excellent agreement with neu tron scattering data on the bulk compounds. For the n = 5 superlattice sample, folded acoustic phonons have been observed.