Physics – Condensed Matter – Superconductivity
Scientific paper
2004-06-22
Phys.Rev. B 71, 184521 (2005)
Physics
Condensed Matter
Superconductivity
Scientific paper
10.1103/PhysRevB.71.184521
It is argued that experiments on rotating superconductors provide evidence for the existence of macroscopic spin currents in superconductors in the absence of applied external fields. Furthermore it is shown that the model of hole superconductivity predicts the existence of such currents in all superconductors. In addition it is pointed out that spin currents are required within a related macroscopic (London-like) electrodynamic description of superconductors recently proposed. The spin current arises through an intrinsic spin Hall effect when negative charge is expelled from the interior of the metal upon the transition to the superconducting state.
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