T A Study calculates that boron-doped diamond (BC5) should be superconducting on up to temperatures of 45 K, which, if borne out in experiments, would make this class of material with the highest with the highest transition temperature into a superconducting state mediated by the passing of phonons.
A paperby Peter Wachter proposes that spin holes in anti -ferromagnetic clusters combine to make nonmagnetic bipolarons, which can condense and lead to superconductivity. (Cu, Pu and Fe high Tc superconductors: all the same mechanism.)
In conclusion, it has been shown that the parent materials of high Tc superconductors are antiferromagnets, where long – range magnetic order has been interrupted by 5 – 20% substitution of the magnetic ions by nonmagnetic ions. These nonmagnetic ions have been provoked by chemical doping, but are of the same kind as the magnetic ions, only in another valence state or another spin configuration. The remaining short – range antiferromagnetic clusters or fluctuations will surround such a spin hole with charge as a magnetic polaron. Two such polarons have an attractive interaction and form a boson nonmagnetic bipolaron. This can make a Bose condensation and lead to superconductivity, which has been shown in many papers by Alexandrov and Mott. We could show, that the same mechanism works for all three (Cu, Pu and Fe) high Tc superconducting systems.
A superconducting paper examines the issue of how the pairing of electrons works and which physical model might be a better explaination. A “pairing glue” in the Hubbard and t-J models is basically a question about the dynamics of the pairing interaction.
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