Postdoctoral position in theoretical condensed matter physics

Website EuropeanXFEL European XFEL

European XFEL,
Hamburg & Institute of Nuclear Physics, PAS, Krakow

European XFEL, Hamburg & Institute of Nuclear Physics, PAS, Krakow invite applications for a postdoctoral position in theoretical condensed matter physics within a common theory project on investigating X-ray induced spin processes in solids.
European XFEL is an international non-profit company located in the Hamburg area in Germany. It operates a 3.4 km long X-ray laser, which produces X-rays of unique quality for studies in physics, chemistry, the life sciences, materials research and other disciplines. The diverse scientific facilities at European XFEL enable scientists from across the globe to carry out a wide range of experimental techniques. User operation started in September 2017. Institute of Nuclear Physics, Polish Academy of Sciences, located in Krakow is a leading national research center in Poland, with an interdisciplinary research focus,  including particle, nuclear, bio-, condensed matter physics, as well as materials science. The two institutions cooperate, and the theory project planned is a part of this cooperation.

  • Successful candidate will be working in Hamburg on this common project.
  • Planned duration of the position is 3 years.

X-ray induced demagnetisation has been a hot and intensively studied topic since many years. Despite dedicated experimental and theory effort, it is still not clear what mechanisms are contributing to this ultrafast process. Various models have been proposed over the past years to explain how an ultrashort laser pulse modifies a magnetic system within a few hundred femtoseconds after laser excitation. However, a comprehensive and rigorous treatment of the overall X-ray induced dynamics is still missing. With this project, we plan to study X-ray induced ultrafast demagnetisation with our in-house modeling tool, which proved very successful at studying X-ray induced structural transitions in solids. We plan to extend it for the spin degrees of freedom and to perform time-resolved studies of various irradiated magnetic samples (which have been tested experimentally). This will allow us to investigate quantitatively the interplay between radiation-induced damage and magnetic processes, and, eventually, to decouple the contributions of those processes. If successful, this work will provide a unique insight into the ultrafast demagnetization induced by X-ray light at the accuracy comparable to fully ab-initio methods – with strong implications for current and planned experiments with intense femtosecond light sources.

Interested candidates holding a PhD Degree or equivalent in theoretical condensed matter physics are invited to apply.
Scientific excellence documented by a strong publication record, very good programming skills and extensive experience in ab-initio calculations (e.g., DFT, MD) are mandatory.
Applications (in English) including: (i) curriculum vitae, (ii) list of publications, (iii) copy of PhD certificate (with grade), (iv) two letters of reference should be sent per electronic mail to:

Prof. Dr. Beata Ziaja-Motyka
CFEL at DESY, Notkestrasse 85,
22607 Hamburg, Germany

The application deadline is 31 December 2018.
Incomplete applications will not be considered. Salary and benefits are similar to those of public service organizations in Germany.
Both cooperating institutions are equal opportunity, affirmative action employers, and invite applications from women.
Expected position start is 1 March 2019.

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