This is one of the very promising subjects in material sciences. Materials that are conducting on the outside and insulating inside, and they excist in real life and are also a theoretical challenge. On top of this they are extremely robust towards disturbances, making it possibly a solution to some of the problems with constructing quantum computers.

Lectures will run from 10 April to 20 April. Students wishing to follow the course are adviced to contact Georg Bruun.