Antiferromagnetism and superconductivity in the half-Heusler semimetal HoPdBi.

ABSTRACT: We observed the coexistence of superconductivity and antiferromagnetic order in the single-crystalline ternary pnictide HoPdBi, a plausible topological semimetal. The compound orders antiferromagnetically at TN = 1.9 K and exhibits superconductivity below Tc = 0.7 K, which was confirmed by magnetic, electrical transport and specific heat measurements. The specific heat shows anomalies corresponding to antiferromagnetic ordering transition and crystalline field effect, but not to superconducting transition. Single-crystal neutron diffraction indicates that the antiferromagnetic structure is characterized by the propagation vector. Temperature variation of the electrical resistivity reveals two parallel conducting channels of semiconducting and metallic character. In weak magnetic fields, th

SUBMITTER: Pavlosiuk O 

PROVIDER: S-EPMC4700465 | biostudies-literature | 2016 Jan

REPOSITORIES: biostudies-literature