2009/08/29 by J. E. Hirsch · 1 citation
Physics and Astronomy · #cond-mat.supr-con
paper · pdf · doi:10.1007/s10948-009-0531-4
published as Journal of Superconductivity and Novel Magnetism 23, 309-317 (2010)
arxiv created 2009/08/29 · arxiv updated 2010/03/05
In a voltaic cell, positive (negative) ions flow from the low (high) potential electrode to the high (low) potential electrode, driven by an `electromotive force' which points in opposite direction and overcomes the electric force. Similarly in a superconductor charge flows in direction opposite to that dictated by the Faraday electric field as the magnetic field is expelled in the Meissner effect. The puzzle is the same in both cases: what drives electric charges against electromagnetic forces? I propose that the answer is also the same in both cases: kinetic energy lowering, or `quantum pressure'.