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Point‐group symmetry and transition metal superconductivity: NbMoTc alloys
Author(s) -
Mueller F. M.,
Myron H. W.
Publication year - 1977
Publication title -
international journal of quantum chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.484
H-Index - 105
eISSN - 1097-461X
pISSN - 0020-7608
DOI - 10.1002/qua.560110616
Subject(s) - superconductivity , condensed matter physics , homogeneous space , group (periodic table) , symmetry (geometry) , density of states , factorization , metal , physics , chemistry , materials science , quantum mechanics , mathematics , metallurgy , geometry , algorithm
Using a factorization of the band density of states into point‐group symmetries, it is shown that the variation of the fractional density of states of one type—Γ 12 —correlates closely (ρ 12 = 0.997) with variations in λ M 〈ω 2 〉. It is also shown that the Hopfield parameter η does not correlate with N p (0) N d (0)/ N (0), which would be true if superconductivity in d ‐band materials was dominated by local atomic processes. It is concluded that bonding plays an important role in superconductivity in Nb‐Mo‐Tc alloys.