Superconductivity and magnetic order in the noncentrosymmetric half-Heusler compound ErPdBi

We report superconductivity at and magnetic order at in the semimetallic noncentrosymmetric half-Heusler compound ErPdBi. The upper critical field, B c 2 , has an unusual quasi-linear temperature variation and reaches a value of 1.6 T for . Magnetic order is found below T c and is suppressed at for . Since , the interaction of superconductivity and magnetism is expected to give rise to a complex ground state. Moreover, electronic-structure calculations show that ErPdBi has a topologically nontrivial band inversion and thus may serve as a new platform to study the interplay of topological states, superconductivity and magnetic order.