Niklas Witt

Niklas Witt is a Postdoctoral Researcher at the Julius-Maximilians-Universität Würzburg in the Computational Quantum Materials department. His work focuses on strongly correlated electron systems, unconventional superconductivity, and the development of advanced many-body methods like FLEX and CDMFT. He is part of the Sangiovanni Group within the Institute for Theoretical Physics and Astrophysics.

Education:

• 2020-2024: Dr. rer. nat. (PhD) in Physics, University of Hamburg
• 2018-2020: M.Sc. in Physics, University of Bremen
• 2015-2018: B.Sc. in Physics, University of Bremen

Research Interests: Dr. Witt’s research explores unconventional superconductivity mechanisms in materials like fullerides, nickelates, and 2D systems. He investigates how multiorbital physics and quantum geometry influence electronic correlations, particularly near phase transitions. His work combines theoretical models with computational tools, including sparse-ir for many-body propagator optimization.

Publications Trends: Recent work emphasizes superconductivity in strained materials, quantum geometry effects in graphene heterostructures, and algorithmic advancements for handling correlated electron systems. Key contributions include bypassing BCS-BEC crossover limits and uncovering interlayer correlation effects in superconductors like La₃Ni₂O₇.

Grants and Awards: No specific grants or awards mentioned.

Labs/Teams: Active in the Computational Quantum Materials group, focusing on theoretical and computational studies of quantum materials.