ABSTRACT

Courses on electricity and magnetism are generally available in physics and engineering departments. Molecular electricity and magnetism has recently been the subject of numerous special topics courses in both physics and chemistry where the study of molecular magnets like, Mn12, has created substantial interest. We are interested in opening the discussion of molecular electricity and magnetism in the specic area of superconductors and related electronic states. The massively quantum entangled state of a superconductor represents just one molecule. Smaller pieces, such as the quantum Hall regime, are somewhat less complex but still out of the ordinary. The quantum mechanical requirements for getting in and out of these states are quite subtle and merit individual attention. Sommerfeld’s relationship, which explicitly connects electrical conductance and thermal conductance, was the rst part of this puzzle. It is still centrally important.