TY  - JOUR
AU  - Bessas, D.
AU  - Winkler, M.
AU  - Sergueev, I.
AU  - König, J. D.
AU  - Böttner, H.
AU  - Hermann, Raphael
TI  - Lattice dynamics in elemental modulated Sb$_ 2$ Te$_ 3$ films
JO  - Physica status solidi / A
VL  - 213
IS  - 3
SN  - 1862-6300
CY  - Weinheim
PB  - Wiley-VCH
M1  - FZJ-2015-06345
SP  - 694–698
PY  - 2016
AB  - The crystallinity and the lattice dynamics in elemental modulated Sbinline imageTeinline image films are investigated microscopically using high energy synchrotron radiation diffraction combined with inline imageSb nuclear inelastic scattering. The correlation length is found to be finite but less than 100 Å. The element specific density of phonon states is extracted. A comparison with the element specific density of phonon states in bulk Sbinline imageTeinline image confirms that the main features in the density of phonon states arise from the layered structure. The average speed of sound at inline image inline image, is almost the same compared to bulk Sbinline imageTeinline image at inline image, inline image. Similarly, the change in the acoustic cut-off energy is within the experimental detection limit. Thus, we suggest that the lattice thermal conductivity in elemental modulated Sbinline imageTeinline image films should not be significantly changed from its bulk value.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000372719800021
DO  - DOI:10.1002/pssa.201532431
UR  - https://juser.fz-juelich.de/record/256394
ER  -