During his PhD studies, Zhihao Jiang explored the electronic properties of twisted graphene heterostructures, which are created by stacking graphene layers at specific twist angles to produce unique electronic behaviors, including superconductivity. He investigated fabrication techniques for van der Waals heterostructures, focusing on the precise assembly of twisted bilayer and double bilayer graphene. Using microARPES, he analyzed their electronic structures under various conditions, uncovering tunable minibands, hybridization gaps, flat bands, and enhanced electron-electron interactions.

These new research findings deepen the understanding of tunable electronic structures in twisted graphene systems, providing valuable insights into fundamental questions such as superconductivity.

The PhD study was completed at Department of Physics and Astronomy, Faculty of Natural Sciences, Aarhus University.

This summary was prepared by the PhD student.

Time: Monday, November 4th, 2024, at 11:00
Place: Building 1520 room 731, Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, 8000 Aarhus C.
Title of PhD thesis: Exploring the Electronic Properties of Twisted Graphene Heterostructures: Fabrication and Spectroscopic Analysis
Contact information: Zhihao Jiang, e-mail: zhihao_jiang@phys.au.dk, tel.: +45 53894126.

Members of the assessment committee:
Associate Professor Timothy John Booth, Department of Physics, Technical University of Denmark, Denmark

Professor Neil Wilson, Department of Physics, University of Warwick, UK

Professor Steen Hannestad (chair), Department of Physics and Astronomy, Aarhus University, Denmark

Main supervisor:
Associate Professor Søren Ulstrup, Department of Physics and Astronomy, Aarhus University, Denmark

Co-supervisor:
Professor Philip Hofmann, Department of Physics and Astronomy, Aarhus University, Denmark.

Language: The PhD dissertation will be defended in English

The defence is public.
The PhD thesis is available for reading at the Graduate School of Natural Sciences/GSNS, Ny Munkegade 120, building 1521, 8000 Aarhus C