Research Position (Postdoc) (m/f/d)

The Faculty of Physics has the following job opening:

Research Position (Postdoc) (m/f/d) ID: Wiss26247* starting: as soon as possible

• fulltime
• salary according to Remuneration level 13 TV-L
• fixed-term Prof. Dr. Malte Rösner’s group studies the properties of novel correlated quantum materials. A particular focus is on synergistic collaboration with groups in experimental physics. To this end, ab initio calculations are combined with modeling concepts and numerical many-body methods to enable material-specific theoretical predictions.

Your Tasks The goal is to develop numerical methods that allow for the material-specific description of (strong) correlation effects in structurally complex systems. To this end, so-called “downfolding” algorithms will be applied and further developed to derive minimal many-body models. Building on this, these models will be analyzed using appropriate numerical treatments (“solvers”) to investigate, among other things, (unconventional) magnetic and/or optical properties of magnetic van der Waals materials and in particular mesoscale engineered CrSBr.

Tasks:

• theoretical scientific work/research on (strongly) correlated materials (95 %)
• participation in self-governance tasks (5 %)

Employment is conducive to scientific qualification and provides the opportunity for further academic development.

We offer

• salary according to Remuneration level 13 TV-L
• fixed-term (2 years) (§ 2 (1) sentence 2 of the WissZeitVG; in accordance with the provisions of the WissZeitVG and the Agreement on Satisfactory Conditions of Employment, the length of contract may differ in individual cases)
• fulltime
• internal and external training opportunities
• variety of health, consulting and prevention services
• reconcilability of family and work
• flexible working hours
• supplementary company pension Your Profile We expect
• completed university degree (Master or equivalent) in Physics
• completed PhD in Theoretical Solid-State Physics
• experience in the ab initio (material-specific) description of materials, for example using density functional theory and/or GW theory
• experience in applying downfolding methods, for example cRPA, mappings to minimal spin models, or comparable approaches
• good command of written and spoken English
• extensive knowledge of Theoretical Solid-State Physics
• ability to work independently, take initiative, and demonstrate commitment
• ability to work effectively as part of a team

Preferred experience and skills

• experience in describing electronic, optical, and/or magnetic correlation effects (e.g., using GW, BSE, DMFT, or magnetic simulations)
• experience in ab initio descriptions of magnetic materials
• experience in programming in Python and/or C++ and/or Fortran
• experience working with high-performance computer systems
• experience supervising bachelor’s and master’s theses
• experience supervising exercises/tutorials
• Knowledge of TRIQS or similar frameworks
• Knowledge of academic self-administration Application Procedure We are looking forward to receiving your application. To apply, please preferably use our online form via the application button below.

application deadline: 11.09.2026 Contact

Prof. Dr. Malte Rösner

malte.roesner@uni-bielefeld.de

Postal Address

Universität Bielefeld

Fakultät für Physik

Fatma Akkaya-Willis

Postfach 10 01 31

33501 Bielefeld Bielefeld University has received a number of awards for its achievements as an equal-opportunity employer and has been recognized as a family-friendly university. The university welcomes applications from women. This is particularly true with regard both to academic and technical posts as well as positions in information technology as well as the skilled crafts and trades. Applications are handled according to the provisions of the state statutes on equal opportunity. Applications from suitably qualified handicapped and severely handicapped persons are explicitly encouraged. At Bielefeld University on request positions can be carried out with reduced working hours as long as this does not conflict with official needs. open as PDF Datenschutzeinstellung

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