4 p.m. - 5 p.m. Location: SLC 1.102
Dr. Enrico Rossi (William and Mary)
The ability to realize 2D crystals and advances in fabrication techniques allow the realization of new heterostructures with novel properties. I will first discuss the case of heterostructures formed by one sheet of graphene, or bilayer graphene, and a topological insulator. I will show how the twist angle between the graphene layer and the TI can be used to tune the electronic properties of such heterostructures and I will discuss their spin-dependent transport properties. I will then consider heterostructures formed by a 2D crystal and a superconductor and show that in some of these heterostructures an anomalous odd-frequency pairing term can be induced due to the interplay of spin-orbit coupling and superconductivity. Finally, I will discuss how the presence of spin-orbit coupling affects the bound states induced by impurities in superconductors and the conditions necessary to drive a chain of such impurities into a topological phase exhibiting Majorana modes.