Gast ::
| Hauptseite > Publikationsdatenbank > EXAFS sheds light on short-range ordering in G e 1 − x S n x heteroepitaxial layers grown by MBE and CVD |
| Hauptseite > Publikationsdatenbank > EXAFS sheds light on short-range ordering in G e 1 − x S n x heteroepitaxial layers grown by MBE and CVD |
| Journal Article | FZJ-2026-01447 |
; ; ; ; ; ;
2025
APS
College Park, MD
This record in other databases: 
Please use a persistent id in citations: doi:10.1103/PhysRevMaterials.9.064601 doi:10.34734/FZJ-2026-01447
Abstract: The local arrangement of atoms in an alloy impacts its electronic band structure and, consequently, itsfundamental physical properties. This work investigates the short-range order of tin atoms in binary Ge1−xSnxsemiconductors epitaxially grown on Ge-buffered Si (001) substrates. Samples featuring Sn content up to 13at.% were analyzed by x-ray absorption fine structure spectroscopy at the Sn-K edge. The study reveals howthe growth method and its process parameters, like temperature, or the epitaxial built-up strain affect the localatomic ordering of tin within the alloys. While the deposition technique seems to have a marginal effect on theSn short-range ordering, the growth temperature and Sn content systematically influence the bonding angles Sn.Ge-Sn next neighbor coordination shells, whereas the interatomic distances remain largely unaffected. In the firstcoordination shell Sn-Ge are strongly favored over Sn-Sn, while the opposite happens in the next coordinationshell, where Sn-Sn are systematically favored. These insights into the relationship of growth condition and layerproperties enable to identify the nature of the large variety of electronic and optical properties measured inGe1−xSnx layers.
Keyword(s): Basic research (1st) ; Condensed Matter Physics (2nd)
; 
; 
; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; Essential Science Indicators ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection
|
The record appears in these collections: |
PDF