spin-ARPES@U125
spin-ARPES at U125_PGM
The spin-ARPES instrument is installed at the quasi-periodic undulator U125. The inastrument is equipped with a SCIENTA R4000 hemispherical analyzer coupled to two Mott-type spin detectors. It is ideal to perform accurate measurements of the electronic band structure of solids as well as to detect the three components of the spin polarization vector with high energy and momentum resolutions. A motorized six axes manipulator is used to control the sample position with high precision. It allows to perform spin- and angle-resolved measurements along any direction in reciprocal space down to a temperature of 40 K. Temperature-dependent measurements between 300 and 40 K are also possible.
Methods
ARPES, Spin-resovled PES, UPS, XPS
Remote access
not possible
| Instrument data | |
|---|---|
| Phone (~49 30 8062-) | 14701 |
| Beam availability | 12h/d |
| Source | U125-2 (quasi-periodic undulator) |
| Monochromator | PGM with 2 gratings (600 l/mm and 1000 l/mm) |
| Energy range (at experiment) | tbd |
| Energy resolution | < 1 meV for E < 100 eV |
| Flux | Expected >10^13 (photons/s/0.1%bw/100 mA) |
| Polarisation | Linear horizontal (fixed) |
| Focus size (hor. x vert.) | 68 μm x 25 μm |
| Temperature range | Measurement: 40–300 K; Preparation up to 2300 K |
| Pressure range | ~10-9 mbar (for details contact the instrument scientist) |
| Detector | Scienta R4000 with two Mott detectors for spin resolution in 3D |
| Manipulators | Motorized 6 axes manipulator |
| Sample holder compatibility | Omicron sample holders |
| Additional equipment | Preparation chamber with
• heating station, • sputter gun, • LEED system, • magnetic coil for applying external magnetic fields up to 300 Oe along any direction before measurements |
| Additional information | Details beamline U125_PGM |
The system features a preparation chamber equipped with two heating stations, a sputter gun, and a LEED system. There are available ports for four different exchangable evaportators. The preparation chamber also contains a magnetic coil capable of applying external pulsed magnetic fields before photoemission measurements of up to 300 mT along any direction. A fast entry load lock is provided for sample exchange. UHV suitcases can be attached directly to the analysis chamber through an already prepared suitable port.
For more details please contact the instrument scientist(s).