Superconductivity and magnetic order in the noncentrosymmetric halfHeusler compound ErPdBi
Abstract
We report superconductivity at T_c = 1.22\ \text{K} and magnetic order at T_N = 1.06\ \text{K} in the semimetallic noncentrosymmetric halfHeusler compound ErPdBi. The upper critical field, B_{c2}, has an unusual quasilinear temperature variation and reaches a value of 1.6 T for T \rightarrow 0 . Magnetic order is found below T_{c} and is suppressed at B{_M} \sim 2.5\ \text{T} for T \rightarrow 0 . Since T_c \simeq T_N , the interaction of superconductivity and magnetism is expected to give rise to a complex ground state. Moreover, electronicstructure 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.
 Publication:

EPL (Europhysics Letters)
 Pub Date:
 October 2013
 DOI:
 10.1209/02955075/104/27001
 arXiv:
 arXiv:1310.4592
 Bibcode:
 2013EL....10427001P
 Keywords:

 Condensed Matter  Superconductivity;
 Condensed Matter  Materials Science
 EPrint:
 6 pages, 5 figures