IPB Colloquium by Stevan Nadj-Perge

You are cordially invited to the IPB COLLOQUIUM which will be held in presence on Tuesday, 20 June 2023 at 12:00 in the “Zvonko Marić” lecture hall of the Institute of Physics Belgrade. The talk entitled

Superconductivity and Strong Correlations In Graphene Multilayer Structures

will be given by Prof. Dr. Stevan Nadj-Perge (Department of Applied Physics and Materials Science, California Institute of Technology, USA). The abstract of the talk:

When two graphene sheets are rotationally misaligned (i.e., twisted) by approximately one degree and stacked together, the resulting bilayer exhibits strongly correlated phases and superconductivity [1]. While the origin of these phases can be traced back to the weakly dispersive electronic bands, the precise microscopic understanding of their origin is still elusive. In this talk, we will discuss several experiments providing insights into the electronic phases of twisted bilayer graphene [2, 3] focusing on their superconducting and topological properties. We will also introduce other graphene-based systems that exhibit similar phenomenology [4-6], highlighting the prevalence of superconductivity in graphene-based structures and give an overview of the current challenges in the field.

[1] Y. Cao et al., Nature 556, 43 (2018).
[2] H. S. Arora et al., Nature 583, 379 (2020).
[3] Y. Choi et al., Nature 589, 536 (2021).
[4] H. Kim et al., Nature 606, 494 (2022).
[5] Y. Zhang et al., Science 377, 1538 (2022).
[6] Y. Zhang et al., Nature 613, 268 (2023).