Electromotive forces and the Meissner effect puzzle

Details Electromotive forces and the Meissner effect puzzle Electromotive forces and the Meissner effect puzzle

2009-08-27

arxiv.org/abs/0908.4096v2

Journal of Superconductivity and Novel Magnetism 23, 309-317 (2010)

Physics

Condensed Matter

Superconductivity

Scientific paper

10.1007/s10948-009-0531-4

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'.

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