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.

The spin-ARPES machine is attached to the U125-PGM beamline in the experimental hall at BESSY II.

Methods

ARPES, Spin-resovled PES, LEED

Remote access

not possible

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).