Research in the Gweon Group
Strange ARPES line shapes and ECFL
Ever since high temperature superconductors have been discovered by scientists, they have been quite baffling, to say the least. The central question is whether the standard textbook theories that we know and love already are applicable to these fascinating materials. The general sense is that those standard theories must be augmented to a great extent, if not replaced completely. Why? It is because of many puzzling experimental results that defy a proper understanding. ARPES results are among the most mysterious!
As the above advertisement says, we might be onto solving this conundrum! The main impetus came from a theoretical breakthrough by Shastry, which seemed to shed light on a long-standing puzzle in high temperature superconductivity in a big way—explaining anomalous ARPES line shapes. Follow the links below, how this is done, and how phenomenological modifications led to further nice findings.
Links
The paper can be accessed from here or here (public)
My invited talk at the March meeting 2012: abstract and presentation
A news article about our work at the Stanford Synchrtron Lightsource
A science highlight article about our work at the Stanford Synchrtron Lightsource