Research Assistant (Postdoc) (m/f/d) (DM-639)

Who We Are

The Weinelt research group studies ultrafast dynamics at solids and their surfaces initiated by ultrashort laser pulses. This includes single and collective quasiparticle dynamics to unravel signatures of non-equilibrium dynamics and phase transitions in the transient electronic structure. We develop a fundamental understanding of processes such as ultrafast demagnetization and magnetic switching by following electronic scattering, spin transport, and magnon excitation with complementary experimental methods. We have a strong background and reputation in state‑selective and spin‑sensitive time‑and angle‑resolved photoemission techniques. Our research is funded by DFG through Transregio CRC 227 “Ultrafast Spin Dynamics” (2018‑2029), CRC 1772 “Heterostructures of Molecules and Two‑Dimensional Materials” (2025‑2029) and the Cluster of Excellence “Center for Chiral Electronics” (start 2026). Beyond our laboratory‑based research, we are the FU Berlin partner for two joint laboratories with the Helmholtz‑Zentrum Berlin, BERLUXS (Berlin Laboratory for Ultrafast X‑ray Slicing), and GELEM (German‑Eastern European Laboratory for Energy and Materials Research). We established new experimental infrastructure around the FemtoSpeX Slicing beamline of the Synchrotron Source BESSY II (HZB) and build currently a new endstation for THz pump/ X‑ray probe experiments at BL11 of FLASH (Free Electron Laser in Hamburg). With this new state‑of‑the‑art experimental equipment for time‑resolved X‑ray scattering and absorption, we study state‑and element specific spin dynamics.

What You Can Expect In Your New Role

Investigation of the electronic structure and dynamics in 2D materials and magnetic layer systems using spin‑and time‑resolved photoelectron spectroscopy. Participation in the research projects of the working group listed under “Who We Are.” You will be primarily responsible for the further development of a momentum microscope and the experiments conducted there. This also includes the commissioning of a spin detector. You will participate in conducting experiments, analyzing data, writing publications, and supervising master’s and doctoral students.

Key Requirements

Completed university studies with a Master’s degree and completed PhD in Physics.

Desirable

• Experimental expertise in research on surfaces or 2D materials and molecular adsorbates/thin films using photoelectron spectroscopy.
• Experimental experience running a momentum microscope.
• Knowledge of surface science, layered and 2D materials, low‑dimensional materials, spin physics, and molecular physics.
• Research expertise as documented by scientific publications and presentations at international conferences.
• Excellent command of written and oral English.

We are interested in a diverse research community and particularly encourage members of under‑represented groups to apply.

If you are interested in what we have to offer, then you can send your application materials to us directly. Simply submit your application via the Online Recruiting Portal by clicking the “Apply now” button. From there you will be redirected to set up a profile (only necessary for your first application).

You can also get in touch with Mr. Martin Weinelt ( ).