Magnetic field-induced quasiparticle excitation in Nb 3 Sn: Evidence for anisotropic s-wave pairing
Magnetic field-induced quasiparticle excitation in Nb 3 Sn: Evidence for anisotropic s-wave pairing
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DOI：
10.1103/physrevb.74.024513
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发表时间：
2006-05
影响因子：
3.7
通讯作者：
R. Kadono;K. Satoh;A. Koda;T. Nagata;H. Kawano-Furukawa;J. Suzuki;M. Matsuda;K. Ohishi;W. Higemoto;S. Kuroiwa;H. Takagiwa;J. Akimitsu
中科院分区：
文献类型：
--
作者：
R. Kadono;K. Satoh;A. Koda;T. Nagata;H. Kawano-Furukawa;J. Suzuki;M. Matsuda;K. Ohishi;W. Higemoto;S. Kuroiwa;H. Takagiwa;J. Akimitsu
The response of vortex state to the magnetic field in ${\mathrm{Nb}}_{3}\mathrm{Sn}$ 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 $2\char21{}3\phantom{\rule{0.3em}{0ex}}\mathrm{T}$. 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 ${\mathrm{Nb}}_{3}\mathrm{Sn}$ and ${\mathrm{V}}_{3}\mathrm{Si}$.
The response of vortex state to the magnetic field in ${\mathrm{Nb}}_{3}\mathrm{Sn}$ 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 $2\char21{}3\phantom{\rule{0.3em}{0ex}}\mathrm{T}$. 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 ${\mathrm{Nb}}_{3}\mathrm{Sn}$ and ${\mathrm{V}}_{3}\mathrm{Si}$.