Open AccessSTUDY ON SUPERCONDUCTIVITY OF AMORPHOUS NON-TRANSITION METALS
Author(s) -
Xun Cao
Publication year - 1984
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.33.639
Subject(s) - superconductivity , condensed matter physics , amorphous solid , materials science , phonon , critical field , transition metal , coupling (piping) , softening , band gap , amorphous metal , physics , chemistry , crystallography , metallurgy , biochemistry , catalysis , composite material
In this work, the empirical dependances of superconducting parameters and phonon spectrum parameters on the Hall Coefficient,and the problem on the Tc in amorphous non-transition metals are studied. It is found that the relative rise of Tc depends linearly upon the relative increase of λ and the Tc increases with the increase of the cut-off frequency ( ω0 ) of the phonon spectrum. In addition, although the Tc for non-transition metals can be raised by softening phonon spectrum, but there is slim hopes to obtain amorphous superconductor having high Tc for non-transition metals including metal Be. The description of electron properties and strong coupling effects which present in upper critical field Hc2 and energy gaps, 2△0 , of amorphous superconductors are also discussed.