NBIA Colloquium by Brian Møller Andersen. NOTE TIME!

The phenomenon of superconductivity has been known for more than 100 years, but continues to fascinate and challenge the research community. Superconducting materials are broadly divided into two categories: conventional and unconventional There are new exciting developments within both classes. For example, the conventional lattice-driven superconductors now reach -13 C, and new families of unconventional superconductors have been recently discovered. For the latter systems, the main question is whether effective attractive electron-electron interactions can arise from purely repulsive interactions. In this presentation I will provide a general overview of the field of modern aspects of superconductivity and highlight the unsolved questions. Several examples of unconventional pair states will be discussed, with examples from cuprates, iron-based superconductors, spin-triplet candidates, and new topological superconductors. Finally, I will provide some examples of research projects taking place at the condensed matter theory section at NBI.

Brian M. Andersen has been a permanent member of the NBI staff since 2013. He received his PhD from NBI in 2004 followed by postdoc stays at the University of Florida and in Paris. Current research in his group focusses on strongly correlated materials, including magnetism and novel forms of superconductivity. More recently, also topological phases of matter have been a central theme of his work.

All are welcome!  Refreshments as usual in the NBIA lounge after the talk.