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Magnetic fluctuations and superconductivity in YbPd$_2$Sn

A. Amato·B. Roessli·P. Fischer·N. Bernhoeft·A. Stunault·C. Baines·A. Dönni·H. Sugawara
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Abstract

We report muon spin relaxation and inelastic neutron measurements on the Heusler system YbPd$_2$Sn. Localised anisotropic and quasi-elastic Yb magnetic fluctuations are observed below $T = 150$K. Both $μ$SR 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 $Γ_7^{\rm CEF}$ ground state. The muon depolarization rate exhibits an additional contribution upon decreasing the temperature below $T_{\rm c}$ suggesting a close interplay between magnetic fluctuations and the superconducting state.

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A. Amato, B. Roessli, P. Fischer, N. Bernhoeft, A. Stunault, C. Baines, A. Dönni, H. Sugawara. 2002-06-10. Magnetic fluctuations and superconductivity in YbPd$_2$Sn. https://doi.org/10.1016/s0921-4526(02)01631-9

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