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@ARTICLE{Heider:1009268,
author = {Heider, Tristan and Bihlmayer, Gustav and Schusser, Jakub
and Reinert, Friedrich and Minár, Jan and Blügel, Stefan
and Schneider, Claus M. and Plucinski, Lukasz},
title = {{G}eometry-{I}nduced {S}pin {F}iltering in {P}hotoemission
{M}aps from {WT}e 2 {S}urface {S}tates},
journal = {Physical review letters},
volume = {130},
number = {14},
issn = {0031-9007},
address = {College Park, Md.},
publisher = {APS},
reportid = {FZJ-2023-02722},
pages = {146401},
year = {2023},
abstract = {We demonstrate that an important quantum material WTe2
exhibits a new type of geometry-induced spin filtering
effect in photoemission, stemming from low symmetry that is
responsible for its exotic transport properties. Through the
laser-driven spin-polarized angle-resolved photoemission
Fermi surface mapping, we showcase highly asymmetric spin
textures of electrons photoemitted from the surface states
of WTe2. Such asymmetries are not present in the initial
state spin textures, which are bound by the time-reversal
and crystal lattice mirror plane symmetries. The findings
are reproduced qualitatively by theoretical modeling within
the one-step model photoemission formalism. The effect could
be understood within the free-electron final state model as
an interference due to emission from different atomic sites.
The observed effect is a manifestation of time-reversal
symmetry breaking of the initial state in the photoemission
process, and as such it cannot be eliminated, but only its
magnitude influenced, by special experimental geometries.},
cin = {PGI-1 / IAS-1 / PGI-6},
ddc = {530},
cid = {I:(DE-Juel1)PGI-1-20110106 / I:(DE-Juel1)IAS-1-20090406 /
I:(DE-Juel1)PGI-6-20110106},
pnm = {5211 - Topological Matter (POF4-521) / DFG project
390534769 - EXC 2004: Materie und Licht für
Quanteninformation (ML4Q) (390534769)},
pid = {G:(DE-HGF)POF4-5211 / G:(GEPRIS)390534769},
typ = {PUB:(DE-HGF)16},
pubmed = {37084452},
UT = {WOS:000996651300003},
doi = {10.1103/PhysRevLett.130.146401},
url = {https://juser.fz-juelich.de/record/1009268},
}