Abstract
A theory is presented explaining the recently observed superconductivity at 9 °K in Pd-H and at 11 °K in Pd-D as due to the quenching of the spin-fluctuations and as due to the decrease of the Coulomb pseudo-potential μ present in Pd. That one observes for PdD a larger superconducting transition temperatureT c than for PdH is explained by the larger lattice expansion resulting for adding H to Pd. The observed non-monotonic dependence ofT c on the Hydrogen concentration is explained by the fact that approximately λ ∝N(0) for smallN(0), whereN(0) is the electronic density of states at the Fermi-energy and where λ denotes the electron-phonon coupling constant. Superconducting transition temperatures are estimated for PtH and RhH.
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Partly supported by US Atomic Energy Commission.
We thank Profs. H. Claus, W. Buckel, and J. Mydosh, and Drs. D. Koellmg and B. Stritzker for useful discussions.
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Bennemann, K.H., Garland, J.W. Theory for superconductivity in Pd-H and Pd-D systems. Z. Physik 260, 367–374 (1973). https://doi.org/10.1007/BF01397961
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DOI: https://doi.org/10.1007/BF01397961