A Bose-Einstein condensation model for high-temperature superconductivity

Details A Bose-Einstein condensation model for high-temperature superconductivity A Bose-Einstein condensation model for high-temperature superconductivity

2003-01-16

arxiv.org/abs/cond-mat/0301311v2

Physical Review B 67, 184514 (2003)

Physics

Condensed Matter

Superconductivity

28 pages, 9 figures, submitted to Phys. Rev. B

Scientific paper

10.1103/PhysRevB.67.184514

I propose that a dopant charge singlet bonding state may arise from the hybridization of molecular orbitals in a cluster containing 13 Cu atoms in the CuO2 plane of the superconducting cuprates. This singlet state forms a pre-formed pair with low binding energy that is spatially bounded and weakly interacting, and that can undergo Bose-Einstein condensation. I show that this model is able to account, in a quantitative and natural way, for many of the thermodynamic and electronic characteristics of the superconducting cuprates, including many of the key experimental ARPES, muSR and microwave results on the temperature and doping dependencies of both the superfluid density and the pairing strengths (superconducting gap, leading-edge-midpoint and psuedogap) in these high-temperature superconductors.

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