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@ARTICLE{CorleyWiciak:1053104,
author = {Corley-Wiciak, Agnieszka Anna and Zaitsev, Ignatii and
Concepción, Omar and Buca, Dan and Manganelli, Costanza L
and Capellini, Giovanni and Spirito, Davide},
title = {{S}hedding light on epitaxial {S}i{G}e{S}n alloys with
{R}aman spectroscopy: local order and thermomechanical
properties},
journal = {Journal of physics / Condensed matter},
volume = {37},
number = {49},
issn = {0953-8984},
address = {Bristol},
publisher = {IOP Publ.},
reportid = {FZJ-2026-01444},
pages = {493002 -},
year = {2025},
abstract = {Thanks to recent breakthroughs in their epitaxy compatible
with industrial standard, (Si)GeSnalloys are now emerging as
material platform for monolithic integration of
next-generationelectronics, optoelectronics,
thermoelectrics, and photonics. In order to support the
rapidevolution of the (Si)GeSn material system, different
advanced characterization methods have tobe developed to
investigate its many interesting physical properties. This
work provides anoverview of Raman spectroscopy investigation
of binary GeSn and ternary SiGeSn alloys. Afterreviewing the
fundamental principles of Raman spectroscopy, the typical
features of (Si)GeSnalloy Raman spectra are introduced.
These features are then attributed to vibrational modes
ofatom pairs, high-order scattering, or disorder-induced
scattering. The discussion also covers thedetails of
polarization-resolved Raman spectroscopy applied
specifically to the group-IV alloyscase, with a focus on
probing the local atomic ordering. Different applications of
the Ramanspectroscopy to the (Si)GeSn material system are
covered. Initially, micro-Ramanmeasurements are complemented
by ancillary techniques, such as x-ray diffraction. This
allowsthe spatially resolved composition and strain of the
investigated epitaxial alloys to bedetermined based on
calibrated coefficients of vibrational mode shifts. Raman
hyperspectralimaging, along with its integration with
numerical simulations for strain mapping inmicrostructures
and devices, is also presented.},
cin = {PGI-9},
ddc = {530},
cid = {I:(DE-Juel1)PGI-9-20110106},
pnm = {5234 - Emerging NC Architectures (POF4-523) / LASTSTEP -
group-IV LASer and deTectors on Si-TEchnology Platform
(101070208) / DFG project G:(GEPRIS)537127697 -
Thermoelektrische Eigenschaften von SiGeSn-Mikrobauelementen
(537127697)},
pid = {G:(DE-HGF)POF4-5234 / G:(EU-Grant)101070208 /
G:(GEPRIS)537127697},
typ = {PUB:(DE-HGF)16},
doi = {10.1088/1361-648X/ae1c0b},
url = {https://juser.fz-juelich.de/record/1053104},
}