Prof. Steven Simon (Oxford)
Abhi Prakash, abhishodh.prakash@physics.ox.ac.uk
Quantum Hall bilayers have been a subject of intense investigation since the first experiments on these systems almost thirty years ago. These are simple systems: a pair of parallel two-dimensional electron gases separated by a distance d placed in a magnetic field at low temperature. In this talk I will consider the case where the total filling is nu=1, that is, one electron per flux quantum. Both the small d and large d limits have been well understood for a long time. Despite thirty years of effort (and many many publications) only very recently has a compelling picture arisen as to what happens at intermediate d. I hope to make this talk accessible to everyone.