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Ionizing radiation from superconductors in the theory of hole superconductivity

arXiv:0710.0876
(Los Alamos),
J. Phys. Condens. Matter 19 125217 (2007).
We point out that large superconducting bodies described by the theory of
hole superconductivity will emit ionizing radiation in non-equilibrium
situations. This remarkable prediction, involving an energy scale a
factor of 10^{12} larger than the low energy scale usually associated with
superconductivity, is unique to the theory of hole superconductivity. The
phenomenon is a consequence of the macroscopic inhomogeneous charge
distribution predicted to exist in superconducting bodies, and the
resulting intrinsic macroscopic spin currents in the superconducting
state in the absence of applied fields. For superconducting bodies of
sufficiently large size, the speed of the spin current carriers
approaches the speed of light, and in addition real electron positron
pair production is expected to occur in the interior. When the
superconducting state is destroyed, electromagnetic radiation with
frequencies up to 0.511MeV/\hbar should arise from
bremsstrahlung and electron-positron annihilation. In support of this
rather unconventional theory we point out that it is the only existing
theory that proposes explanations for two fundamental universal effects
associated with superconductivity: the Meissner effect and the Tao effect.

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