Microstructure Effect on LaPtBi Superconductivity

Abstract

Recent studies predict that LaPtBi is a half-Heusler has multi-functionalities: the superconductivity 1 and topological edge states, a namely topological superconductor under certain conditions 2. It can be stimulated under substantial uniaxial strain conditions. The superconductivity in LaPtBi has been shown in bulk. However, the topological superconductive surface state can not be observed yet. In this study, we report the transmission electron microscopy work for observation of superconductivity and its relationship with a uniaxial strain in MBE grown epitaxial non-centrosymmetric LaPtBi film on MgO (001).