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Low-temperature enhancement of the thermopower of amorphous (Zr Ni)Al alloys

Journal of Physics: Condensed Matter, ISSN: 0953-8984, Vol: 2, Issue: 32, Page: 6755-6762
1990
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  • Citations
    5
    • Citation Indexes
      5

Article Description

Enhancements of the low-temperature thermopower of amorphous melt-quenched (ZrNi)Al alloys with x=0, 0.05 , 0.10, 0.15, 0.20 and 0.25 are shown to be in good agreement with the predictions for the electron-phonon enhancement. The results imply that the low-frequency part of the Eliashberg function alpha ( omega ) F( omega ) is proportional to omega with n>1 for these alloys. These alloys are weak-coupling superconductors, and the addition of Al reduces the electron-phonon coupling constant lambda despite the tendency to strong coupling in simple amorphous metals.

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