Superconductivity and Electronic Structure of the W7Re13B Compound
A. Kowalczyka, B. Andrzejewskia, A. Jezierskia, T. Tolińskia, A. Szlafereka, M. Falkowskia and G. Chełkowskab
aInstitute of Molecular Physics, Polish Academy of Sciences, Smoluchowskiego 17, 60-179 Poznań, Poland
bInstitute of Physics, Silesian University, Uniwersytecka 4, 40-007 Katowice, Poland
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Received: 25 09 2005;
The superconductor W7Re13B has been studied by the magnetic measurements and microwave absorption. The crystal structure of W7Re13B is cubic (β-Mn type). This compound exhibits a sharp superconducting transition at a temperature of Tc=7.2 K. The electronic structure of W7Re13B has been studied by X-ray photoelectron spectroscopy and the band structure has been calculated by the full-potential local-orbital minimum-basis method using the scalar-relativistic mode. The main contribution to the density of states at the Fermi level is from 5d electrons of W and Re. The W and Re bands are similar and substituting W by Re does not change the total density of states.
DOI: 10.12693/APhysPolA.109.597
PACS numbers: 71.20.Eh, 74.70.-b, 74.25.Ha, 74.25.Jb, 82.80.Pv