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Type: Artigo de periódico
Title: Low-temperature Specific Heat And Superconductivity Of α-phase A U-ga Alloys
Author: Hoyt R.F.
Mota A.C.
Luengo C.A.
Abstract: Low-temperature specific-heat measurements are reported on α-phase A u-Ga alloys. The electronic specific-heat coefficient γ is observed to increase upon alloying at the initial rate dlnγdz=0.95. The Debye temperature is observed to decrease in the alloys at the rate - 1.63 K/at.%. The increase in γ is compared with increasing values of λ, the electron-phonon mass enhancement as evaluated from measurements of the superconducting transition temperature. Comparison is also made between the values of γ and λ for A g-Ga and C u-Ga α-phase alloys. We find that the band-structure density of states at the Fermi level, Nbs for Au-Ga and Ag-Ga alloys is a weakly increasing function of composition, while for C u-Ga alloys it is slightly decreasing and in good agreement with the calculations of Lasseter and Soven. © 1976 The American Physical Society.
Rights: aberto
Identifier DOI: 10.1103/PhysRevB.14.441
Date Issue: 1976
Appears in Collections:Unicamp - Artigos e Outros Documentos

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