Magnetic field-induced quasiparticle excitation in Nb3 Sn: Evidence for anisotropic s -wave pairing

R. Kadono, K. H. Satoh, A. Koda, T. Nagata, H. Kawano-Furukawa, J. Suzuki, M. Matsuda, K. Ohishi, W. Higemoto, S. Kuroiwa, H. Takagiwa, J. Akimitsu

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Abstract

The response of vortex state to the magnetic field in Nb3 Sn is probed using muon spin rotation and small-angle neutron scattering. A transformation of vortex structure between hexagonal and squared lattice is observed over a relatively low field range of 2-3 T. The gradual increase of the magnetic penetration depth with increasing field provides microscopic evidence for anisotropic (or multigapped) s -wave pairing suggested by the Raman scattering experiment. This result renders need for careful examination on the difference of electronic properties between Nb3 Sn and V3 Si.

Original languageEnglish
Article number024513
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume74
Issue number2
DOIs
Publication statusPublished - Jul 25 2006
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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    Kadono, R., Satoh, K. H., Koda, A., Nagata, T., Kawano-Furukawa, H., Suzuki, J., Matsuda, M., Ohishi, K., Higemoto, W., Kuroiwa, S., Takagiwa, H., & Akimitsu, J. (2006). Magnetic field-induced quasiparticle excitation in Nb3 Sn: Evidence for anisotropic s -wave pairing. Physical Review B - Condensed Matter and Materials Physics, 74(2), [024513]. https://doi.org/10.1103/PhysRevB.74.024513