TY  - CONF
AU  - Döring, Sven
AU  - Plucinski, Lukasz
AU  - Cramm, Stefan
AU  - Gehlmann, Mathias
AU  - Eschbach, Markus
AU  - Mlynczak, Ewa
AU  - Schneider, Claus Michael
TI  - Spin- and angle-resolved photoemission studies at the VUV undulator beamline BL5 of the synchrotron radiation facility DELTA
M1  - FZJ-2015-01080
PY  - 2014
AB  - The experimental endstation at the beamline BL5 of the synchrotron radiationfacility DELTA at the TU Dortmund is optimized for spin- and angle-resolvedphotoemission experiments in the VUV regime. The hemispherical electronanalyzer is equipped with a SPLEED detector for spin-resolved photoemissionas well as a two dimensional delay line detector for angle-resolvedmeasurements. The two detectors can be operated semi-simultaneously,therefore, a combination of spin- and angle-resolved measurements on thesame sample species becomes feasible. In addition, the undulator U250 and theplain grating monochromator beamline BL5 are optimized for high brilliance inthe VUV and low energy soft x-ray range, which is in particular suitable forspin-resolved experiments where obtaining ample countrates is usuallychallenging.At the moment, a time-resolved modus for the experiments is undercommissioning. In a close collaboration with the machine group of DELTA(AG Khan, TU Dortmund), a laser is used to produce ultra-short VUV pulses inthe fs-regime via the so-called coherent harmonic generation principle. A partof this seeding laser can be used as a pump laser for pump-probe experiments.During the last few years, the beamline was mainly used to investigatetopological insulators and thin magnetic films. For those sample systems, thecombination of spin- and angle-resolved photoemission experiments wasessential in order characterize the spin-texture of the electronic band structures.In our contribution, we will show those experimental results and give anoutlook on the new time-resolved modus that is currently undercommissioning.
T2  - SNI
CY  - 21 Sep 2014 - 23 Sep 2014, Bonn (Germany)
Y2  - 21 Sep 2014 - 23 Sep 2014
M2  - Bonn, Germany
LB  - PUB:(DE-HGF)6
UR  - https://juser.fz-juelich.de/record/187409
ER  -