This title appears in the Scientific Report :
2016
Please use the identifier:
http://dx.doi.org/10.1002/pssa.201532431 in citations.
Lattice dynamics in elemental modulated Sb$_ 2$ Te$_ 3$ films
Lattice dynamics in elemental modulated Sb$_ 2$ Te$_ 3$ films
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 t...
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Personal Name(s): | Bessas, D. (Corresponding author) |
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Winkler, M. / Sergueev, I. / König, J. D. / Böttner, H. / Hermann, Raphael | |
Contributing Institute: |
Streumethoden; JCNS-2 JARA-FIT; JARA-FIT Streumethoden; PGI-4 |
Published in: | Physica status solidi / A, 213 (2016) 3, S. 694–698 |
Imprint: |
Weinheim
Wiley-VCH
2016
|
DOI: |
10.1002/pssa.201532431 |
Document Type: |
Journal Article |
Research Program: |
Jülich Centre for Neutron Research (JCNS) Materials and Processes for Energy and Transport Technologies Quantum Condensed Matter: Magnetism, Superconductivity Controlling Collective States Controlling Collective States |
Publikationsportal JuSER |
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. |