Probing strongly correlated flat-band states in bilayer graphene using quantum dot spectroscopy

Motivation:
Electronic flat bands in twisted and bernal stacked graphene bilayers host a wealth of strongly correlated states of matter amongst which are unconventional superconductors, states with topological character, and with magnetic order. The properties of these systems cannot be understood by those of their individual electrons but rather arise from strong electron-electron correlations.     
Tunneling spectroscopy is a powerful tool to study these novel systems and uncover the microscop-ic mechanism giving rise to the collective behavior. Our group has developed gate-defined quan-tum dots (QDs) as µeV-scale, spin and valley resolved tunneling spectrometers to study strongly correlated phenomena in 2D materials. 

Goal of this thesis:
The aim of this Master thesis is to study unconventional flat band superconductivity in bernal stacked bilayer graphene using QD tunneling spectroscopy. You will measure the sizes and textures of the superconducting gaps in this material below 10mK using a modern dilution refrigerator. 

Your role:  
You will become part of our young and motivated research group and actively engage in all stages of the research process, from device fabrication to experimental characterization. By completing this thesis, you will acquire comprehensive knowledge and hands-on experience in quantum device physics, low-temperature experimentation, and advanced nanofabrication techniques, preparng you ideally for future scientific and industrial careers in quantum technologies. You will deepen your understanding of 2D materials, mesoscopic transport, superconductivity and quantum physics.

Contact information:  
For further information, please contact Luca Banszerus: luca.banszerus(at)univie.ac.at