Magnetic fluctuations and superconductivity in YbPd2Sn
Abstract
We report muon spin relaxation and inelastic neutron measurements on the Heusler system YbPd2Sn. Localised anisotropic and quasi-elastic Yb magnetic fluctuations are observed below T = 150K. Both μSR and neutron data indicate a slowing-down of the spin-fluctuations, upon lowering the temperature, similar to that observed in Kondo lattices. The temperature dependence of the quasi-elastic neutron signal is compatible with a crystal-electric field scheme having a 7 CEF ground state. The muon depolarization rate exhibits an additional contribution upon decreasing the temperature below T c suggesting a close interplay between magnetic fluctuations and the superconducting state.
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