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@ARTICLE{Ruta:454499,
author = {Ruta, Beatrice and Hechler, S. and Neuber, N. and Orsi, D.
and Cristofolini, L. and Gross, O. and Bochtler, B. and
Frey, M. and Kuball, A. and Riegler, S. S. and Stolpe, M.
and Evenson, Z. and Gutt, C. and Westermeier, Fabian and
Busch, R. and Gallino, I.},
title = {{W}ave-{V}ector {D}ependence of the {D}ynamics in
{S}upercooled {M}etallic {L}iquids},
journal = {Physical review letters},
volume = {125},
number = {5},
issn = {1079-7114},
address = {College Park, Md.},
publisher = {APS},
reportid = {PUBDB-2021-00573},
pages = {055701},
year = {2020},
abstract = {We present a detailed investigation of the wave-vector
dependence of collective atomic motion in
Au$_{49}$Cu$_{26.9}$Si$_{16.3}$Ag$_{5.5}$Pd$_{2.3}$ and
Pd$_{42.5}$Cu$_{27}$Ni$_{9.5}$P$_{21}$ supercooled liquids
close to the glass transition temperature. Using x-ray
photon correlation spectroscopy in a previously uncovered
spatial range of only a few interatomic distances, we show
that the microscopic structural relaxation process mimics
the structure and presents a marked slowing down at the main
average interparticle distance. This behavior is accompanied
by dramatic changes in the shape of the intermediate
scattering functions, which suggest the presence of large
dynamical heterogeneities at length scales corresponding to
a few particle diameters. A ballisticlike mechanism of
particle motion seems to govern the structural relaxation of
the two systems in the highly viscous phase, likely
associated with hopping of caged particles in agreement with
theoretical studies.},
cin = {DOOR ; HAS-User / FS-PET-S},
ddc = {530},
cid = {I:(DE-H253)HAS-User-20120731 /
I:(DE-H253)FS-PET-S-20190712},
pnm = {6212 - Quantum Condensed Matter: Magnetism,
Superconductivity (POF3-621) / 6G3 - PETRA III (POF3-622)},
pid = {G:(DE-HGF)POF3-6212 / G:(DE-HGF)POF3-6G3},
experiment = {EXP:(DE-H253)P-P10-20150101},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:32794848},
UT = {WOS:000552610300006},
doi = {10.1103/PhysRevLett.125.055701},
url = {https://bib-pubdb1.desy.de/record/454499},
}