Abstract

Results of low temperature specific heat experiments on three compounds, Sc 5 Co 4 Si 10, Sc 5 Rh 4 Si 10 and Sc 5 Ir 4 Si 10 which are superconducting with critical temperatures of 4.75, 8.25 and 8.49 K, respectively, are given. Analysis of the data yields relatively large Debye temperatures (400–600 K) plus enhanced electronic density of states and electron-phonon interaction parameters (λ). Based on McMillan's formalism, these compounds are intermediate-coupled superconductors with values of λ ranging from 0.47 to 0.62.

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