Abstract

Abstract Based on a tight binding analysis of first principles energy band calculations for cubic Nb3Sn by Klein et al we have computed the bandstructure of tetragonally distorted Nb3Sn. We find a big splitting of that density of states peak near the Fermi energy which originates from the very flat Γ12 subbands. The splitting is mainly caused by additional intrachain hybridization of Nb orbitals due to the dimerization of Nb chains.

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