Scholarship for PhD students

Offer Description

Scope of work

The successful PhD candidates will be part of the group created by dr Jacek Herbrych ( ) within project NCN SONATA BIS /50/E/ST3/00033 entitled “Properties of low-dimensional quantum systems with charge, spin, and orbital degrees of freedom.” The project's scientific goal is to investigate the novel phenomena of multi-orbital systems, i.e., in systems with many local degrees of freedom (orbital, spin, and charge). A prominent example of the phenomena unique to the multi-orbital system is the so-called orbital-selective Mott phase (OSMP). Competing interactions can lead to the selective localization of electrons on some orbitals. Such insulating bands coexist with the metallic band (or bands) with itinerant electrons. The dispersion relation (the momentum dependence) of the latter is routinely measured using spectroscopic tools (e.g., single-particle spectral function measured by the angle-resolved photoemission spectroscopy, dynamical spin structure factor measured by inelastic neutron scattering, or other tools like resonant inelastic X-ray scattering spectroscopy, Raman spectroscopy, or reflection/transmission measurements). However, due to the enormous Hilbert space of multi-orbital systems, the theoretical analysis of the dynamical properties of such systems is mostly missing (especially the momentum-resolved quantities). The main scientific aim of this proposal is to investigate properties (and discover novel exotic phases) of the models with many competing energy scales originating from spin, charge, and orbital degrees of freedom, i.e., to investigate multi-orbital Hubbard model, generalized Kondo-Heisenberg model, spin-orbital model, and effective models which describe the physics mentioned above (i.e., spin systems with RKKY-like interaction). The theoretical analysis of such idealized Hamiltonians will motivate crystal growers and provide theoretical guidance for experimentalists to discover new multi-orbital-based low-dimensional compounds that may display highly unusual physics.

• The candidate must have completed university physics studies with a very good or excellent final degree and a master's thesis in condensed matter theory or a closely related discipline.
• Experience with models and analytical or numerical methods/theories such as basic quantum mechanics, solid-state physics, lattice models of interacting spins, fermions, or bosons, many-body quantum systems, and state-of-the-art diagonalization techniques.
• Knowledge of programming languages such as C++, Fortran, Python, Julia.
• Soft skills in the context of scientific writing and presentation, including knowledge of the typesetting language LaTeX.
• The candidate has to be fluent in spoken and written English.

Languages ENGLISH Level Excellent

Additional Information

Conditions of employment

• Position Name: scholarship holder
• Number of positions: 1
• Field: condensed matter theoretical physics
• Type of contract: scholarship, 48 months
• Deadline for submitting applications: July 1, 2026
• Planned competition end date: October 1, 2026

Selection process

Required documents

• CV including scientific achievements (publications, internships, conferences, training)
• Copy of Master's degree diploma or confirmed information about graduation (at the moment of employment).
• Confirmation of the status of PhD student from PhD School of Wrocław University of Science and Technology (at the moment of employment)
• Candidates will be selected through a two-stage process. During the first stage, the submitted documents will be evaluated; during the second stage, shortlisted candidates will be invited to an interview.
• The competition will be decided by a recruitment committee appointed by the project manager, following the National Science Center (NCN) regulations. Recruitment will be carried out according to NCN requirements. We reserve the right not to award the scholarship or renew the competition if the recruitment criteria are unmet.

Work Location(s)

Number of offers available 1 Company/Institute Wrocław University of Science and Technology Country Poland Geofield

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