IFIMAC+ICMM Joint Seminar Series focuses on cutting-edge research on condensed matter physics, bringing speakers from all over the world to our Cantoblanco Campus. All talks are streamed online. Some of them will be celebrated on campus and onsite participation will also be possible. You need to subscribe to our mailing list at the link provided below to get the links to the seminar room. https://listas-correo.uam.es/sympa/subscribe/seminarios-ifimac-icmm-l

Correlated phases in multilayer graphene

Tobias Stauber, Instituto de Ciencia de Materiales de Madrid, CSIC

May 12th, 2022, 12:00 CEST

Much progress has been done in the controlled stacking of two-dimensional crystals, leading to (i) well-defined Moiré systems where the layers are rotated with respect to each other or (ii) simply achieving a metastable configuration within the initial unit cell. By this, a plethora of new correlated phases ranging from unconventional superconductivity over anomalous quantum Hall ferromagnetism to ferroelectricity has been observed. After an overview on recent experimental findings, I will first summarize what this “magic” is all about. I will then discuss our theoretical results on the electronic phases in twisted bilayer graphene. For trilayer graphene, I will present our theory on the superconducting instability and Hall density. And finally, I will also show preliminary results for quadrilayer graphene that may allow conclusions on the possibly universal pairing mechanism in these systems.