Andreev Reflection Study of the Superconductor Mo_3Sb_7

• Authors: V. Dmitriev , L. Rybaltchenko , E. Khristenko , L. Ishchenko , Z. Bukowski , R. Troć
• Languages of publication: EN

Abstracts

EN

The point-contact Andreev-reflection measurements on the new paramagnetic superconductor Mo_3Sb_7 were carried out. It was found that the order parameter ∆ is strongly anisotropic varying over a very wide range depending on the contact orientation when the maximum ∆_{max} exceeds at least 40 times the minimum ∆_{min} in spite of the invariable T_c that cannot be typical of conventional superconductors. For these and other reasons we suggest that Mo_3Sb_7 is not a trivial BCS (s-wave) superconductor but rather has some unconventional pairing symmetry.

Keywords

EN

74.70.Ad

Discipline

• 74.70.Ad: Metals; alloys and binary compounds (including A15, MgB2, etc.)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2008
• Volume: 114
• Issue: 1
• Pages: 263-267

Dates

published

2008-07

received

2007-11-06

Contributors

author

V. Dmitriev

• B. Verkin Institute for Low Temperature Physics and Engineering, National Academy of Sciences of Ukraine, 61103 Kharkiv, Ukraine
• International Laboratory of High Magnetic Fields and Low Temperatures, P.O. Box 4714, 50-985 Wrocław 47, Poland

author

L. Rybaltchenko

• B. Verkin Institute for Low Temperature Physics and Engineering, National Academy of Sciences of Ukraine, 61103 Kharkiv, Ukraine

author

E. Khristenko

• B. Verkin Institute for Low Temperature Physics and Engineering, National Academy of Sciences of Ukraine, 61103 Kharkiv, Ukraine

author

L. Ishchenko

• B. Verkin Institute for Low Temperature Physics and Engineering, National Academy of Sciences of Ukraine, 61103 Kharkiv, Ukraine

author

Z. Bukowski

• W. Trzebiatowski Institute of Low Temperature and Structure Research, Polish Academy of Sciences, P.O. Box 1410, 50-950 Wrocław 2, Poland

author

R. Troć

• W. Trzebiatowski Institute of Low Temperature and Structure Research, Polish Academy of Sciences, P.O. Box 1410, 50-950 Wrocław 2, Poland

References

• 1. Z. Bukowski, D. Badurski, J. Stepień-Damm, R. Troć, Solid State Commun. 123, 283 (2002)
• 2. G.E. Blonder, M. Tinkham, T.M. Klapwijk, Phys. Rev. B 25, 4515 (1982)
• 3. V.L. Ginzburg, L.D. Landau, Zh. Eksp. Teor. Fiz. 20, 1064 (1950)
• 4. H.R. Werthamer, E. Helfand, P.C. Honenberg, Phys. Rev. 147, 295 (1966)
• 5. K. Maki, Physics 1, 127 (1964);Phys. Rev. 148, 362 (1966)

Identifiers

DOI

10.12693/APhysPolA.114.263