Correlation Between the Superconducting and Normal State Properties of Amorphous Molybdenum-Silicon Alloys
The initial linear decrease of the superconducting transition temperature Tc is 0.075 K/at.% Si. This is consistent with the e/a dependence found by Collver and Hammond (2) for near neighbor amorphous 4d metals if one assumes that each Si atom contributes 4 electrons to the conduction band.
Supperconductivity persists up to at least 64 at.% i.e., slightly into the concentration region where the resistivity begins to increase. As x→xo from below, the superconducting transition width ΔTc increases rapidly until at x ≃ xo the width ΔTc becomes comparable to Rc.
For x > xo, Tc, if it exists, is less than 1.5K.
KeywordsPercolation Theory Superconducting Transition Temperature Room Temperature Resistivity Tentative Model Transmission Electron Diffraction
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