Condensed Matter & Surface Sciences





Carnegie Mellon University



Novel Superconductors in Two Dimensions



The physics of superconductors in reduced dimensions two in particular is related to such varied phenomena as high-temperature superconductivity, topological superconductivity and the paradigmatic quantum phase transition, the superconductor-insulator transition.  The discovery of graphene has led to the ability to produce new, highly crystalline 2D superconductors from other van der Waals bonded materials, which has given us access to superconductivity in single atomic layers as well as new ways of tuning and understanding superconductivity in these systems.  In this talk, I will present an overview of superconductivity in two dimensions and I will discuss our recent experiments on single and few-atomic-layer devices constructed from the transition metal dichacogenides TaS2 and NbSe2, which possess remarkable properties due to their crystal symmetry and strong spin-orbit coupling. I will discuss their connection to exotic phenomena such as spin-triplet Cooper pairing and topological superconductivity.





Thursday, March 22, 2018

4:10 p.m. -- Walter Lecture Hall 245