Superconductivity and Electronic Structure of the W_7Re_{13}B Compound

• Authors: A Kowalczyk , B Andrzejewski , A Jezierski , T Toliński , A Szlaferek , M Falkowski , G Chełkowska
• Languages of publication: EN

Abstracts

EN

The superconductor W_7Re_{13}B has been studied by the magnetic measurements and microwave absorption. The crystal structure of W_7Re_{13}B is cubic (β-Mn type). This compound exhibits a sharp superconducting transition at a temperature of T_c=7.2 K. The electronic structure of W_7Re_{13}B 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.

Keywords

EN

71.20.Eh; 74.70.-b; 74.25.Ha; 74.25.Jb; 82.80.Pv

Discipline

• 74.25.Ha: Magnetic properties including vortex structures and related phenomena(for vortices, magnetic bubbles, and magnetic domain structure, see 75.70.Kw)
• 71.20.Eh: Rare earth metals and alloys
• 74.25.Jb: Electronic structure (photoemission, etc.)
• 74.70.-b: Superconducting materials other than cuprates(for cuprates, see 74.72.-h; for superconducting films, see 74.78.-w)
• 82.80.Pv: Electron spectroscopy (X-ray photoelectron (XPS), Auger electron spectroscopy (AES), etc.)

• Journal: Acta Physica Polonica A
• Year: 2006
• Volume: 109
• Issue: 4-5
• Pages: 597-600

Dates

published

2006-04

received

2005-09-25

Contributors

author

A Kowalczyk

• Institute of Molecular Physics, Polish Academy of Sciences, Smoluchowskiego 17, 60-179 Poznań, Poland

author

B Andrzejewski

• Institute of Molecular Physics, Polish Academy of Sciences, Smoluchowskiego 17, 60-179 Poznań, Poland

author

A Jezierski

• Institute of Molecular Physics, Polish Academy of Sciences, Smoluchowskiego 17, 60-179 Poznań, Poland

author

T Toliński

• Institute of Molecular Physics, Polish Academy of Sciences, Smoluchowskiego 17, 60-179 Poznań, Poland

author

A Szlaferek

• Institute of Molecular Physics, Polish Academy of Sciences, Smoluchowskiego 17, 60-179 Poznań, Poland

author

M Falkowski

• Institute of Molecular Physics, Polish Academy of Sciences, Smoluchowskiego 17, 60-179 Poznań, Poland

author

G Chełkowska

• Institute of Physics, Silesian University, Uniwersytecka 4, 40-007 Katowice, Poland

References

• 1. K. Kawashima, A. Kawano, T. Muranaka, J. Akimitsu, J. Phys. Soc. Jpn., 74, 700, 2005
• 2. Yu.B. Kuz'ma, V.I. Lakh, B.I. Stadnik, Y.V. Voroshilov, Sov. Metall. Met. Ceram., 6, 462, 1968
• 3. P. Villars, L.D. Calvert, Pearson's Handbook of Crystallographic Data for Intermetallic Phases, American Society for Metals, Metals Park (OH) 1985
• 4. K. Koepernik, H. Eschrig, Phys. Rev. B, 59, 1743, 1999
• 5. J.P. Perdew, K. Burke, M. Ernzerhof, Phys. Rev. Lett., 77, 3865, 1996

Identifiers

DOI

10.12693/APhysPolA.109.597