Edward A. Bouchet Award: Following Bouchet: Service, Mentoring, and Surface State Transport in 3D Topological Insulators

In this Bouchet Award talk, I will first discuss the importance of service and mentoring, using my experiences and the life of Edward Bouchet as examples. I will then discuss some of my research on topological insulators (TIs), whose conducting surface states have attracted significant interest as new electronic phases having potential applications from dissipationless interconnects to quantum computing. In particular, I will describe some measurements which demonstrate the unique properties of surface transport in the 3D TI Bi₂Se: TI-superconductor junctions where the supercurrent flows primarily through surface states, Aharonov-Bohm effects which demonstrate ballistic surface transport, Fraunhofer spectroscopy where an in-plane magnetic field leads to finite momentum shifts in Cooper pairs, and anisotropic magnetoresistance in TI magnetic structures showing tunable gapping of the surface state.