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arXiv · 1302.1943

Superconductivity in the noncentrosymmetric half-Heusler compound LuPtBi : A possible topological superconductor

F. F. Tafti·Takenori Fujii·A. Juneau-Fecteau·S. Rene de Cotret·N. Doiron-Leyraud·Atsushi Asamitsu·Louis Taillefer
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Abstract

We report superconductivity in the ternary half-Heusler compound LuPtBi, with Tc = 1.0 K and Hc2 = 1.6 T. The crystal structure of LuPtBi lacks inversion symmetry, hence the material is a noncentrosymmetric superconductor. Magnetotransport data show semimetallic behavior in the normal state, which is evidence for the importance of spin-orbit interaction. Theoretical calculations indicate that the strong spin-orbit interaction in LuPtBi should cause strong band inversion, making this material a promising candidate for 3D topological superconductivity.

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F. F. Tafti, Takenori Fujii, A. Juneau-Fecteau, S. Rene de Cotret, N. Doiron-Leyraud, Atsushi Asamitsu, Louis Taillefer. 2013-02-19. Superconductivity in the noncentrosymmetric half-Heusler compound LuPtBi : A possible topological superconductor. https://doi.org/10.1103/physrevb.87.184504

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