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@ARTICLE{Storeck:459473,
author = {Storeck, G. and Rossnagel, K. and Ropers, C.},
title = {{U}ltrafast spot-profile {LEED} of a charge-density wave
phase transition},
journal = {Applied physics letters},
volume = {118},
number = {22},
issn = {1077-3118},
address = {Melville, NY},
publisher = {American Inst. of Physics},
reportid = {PUBDB-2021-02577},
pages = {221603},
year = {2021},
abstract = {We investigate the optically driven phase transition
between two charge-density wave (CDW) states at the surface
of tantalum disulfide(1T-TaS2). Specifically, we employ a
recently improved ultrafast low-energy electron diffraction
setup to study the transition from the nearlycommensurate to
the incommensurate (IC) CDW state. The experimental setup
allows us to follow transient changes in the diffraction
pat-tern with high momentum resolution and 1-ps electron
pulse duration. In particular, we trace the diffraction
intensities and spot profiles ofthe crystal lattice,
including main and CDW superstructure peaks, as well as the
diffuse background. Harnessing the enhanced data quality
ofthe instrumental upgrade, we follow the laser-induced
transient disorder in the system and perform a spot-profile
analysis that yields a sub-stantial IC-peak broadening for
very short time scales followed by a prolonged spot
narrowing.},
cin = {FS-SXQM},
ddc = {530},
cid = {I:(DE-H253)FS-SXQM-20190201},
pnm = {632 - Materials – Quantum, Complex and Functional
Materials (POF4-632)},
pid = {G:(DE-HGF)POF4-632},
experiment = {EXP:(DE-MLZ)External-20140101},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000683586000001},
doi = {10.1063/5.0052603},
url = {https://bib-pubdb1.desy.de/record/459473},
}