Fachbereich Physik - Institut für ExperimentalphysikResearch assistant (praedoc) (m/f/d) with ¾ part-time job limited to 31.12.2025 Entgeltgruppe 13 TV-L FU Reference code: PhyKu_01/22 Bewerbungsende: 23.05.2022

The position is assigned to the workgroup of Prof. W. Kuch, which is investigating ultrathin magnetic films, surfaces, adsorbed molecules, and nanostructures that may become relevant in a future spin-based electronics. Besides unconventional spin structures at surfaces, the focus is also on spin and magnetization dynamics. Experiments are carried out both by laboratory-based techniques as well as by using synchrotron radiation.
Job description:
The PhD work will involve X-ray spectroscopy investigations of magnetization dynamics in ultrafast optical excitation of bilayers consisting of antiferromagnetic and ferromagnetic materials to gain insight into the interplay of ultrafast demagnetization, spin currents, and thermal effects. Pump–probe measurements will be employed to follow the magnetization dynamics after ultrashort infrared-laser excitation. Of particular interest is the behavior of the antiferromagnetic spin structure, which is explored by linear magnetic dichroism in resonant x-ray reflectivity. While sample preparation and characterization will be carried out at the Physics department of the Freie Universität, time-resolved measurements will be conducted at synchrotron radiation sources, for example at BESSY II in Berlin. The third-party funded research project provides an opportunity to do a doctorate.

Requirements:
A master's degree is required.

Desirable
A master's degree with a master thesis in experimental physics or equivalent. Experience in one or more of the following is of advantage: Magnetization dynamics, ultrafast pump–probe experiments, surface science, ultra-high vacuum, x-ray absorption spectroscopy. Applications must include a complete CV, an abstract (max. one page) of the master thesis, as well as names and addresses (postal and e-mail) of two or three persons willing to provide confidential letters of reference. Only complete applications will be considered.
For further information, please contact Herr Prof. Dr. Wolfgang Kuch (magnetism@physik.fu-berlin.de / +49 30 838 52098).

Applications should be sent by e-mail, together with significant documents, indicating the reference code, in PDF format (preferably as one document) Frau Christiane Cech: magnetism@physik.fu-berlin.de or postal to

Freie Universität Berlin
Fachbereich Physik
Institut für Experimentalphysik
Frau Christiane Cech
Arnimallee 14
14195 Berlin (Dahlem)
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