  Study of magnetotransport properties of ScPtBi revealed simultaneously: a
negative contribution to the longitudinal magnetoresistance, the planar Hall
effect, and distinct angular narrowing of the longitudinal magnetoresistance {
three hallmarks of chiral magnetic anomaly (pumping of axial charge between
Weyl nodes), a distinct property of topological semimetals. Electronic
structure calculations show that structural defects, such as antisites and
vacancies, bring substantial density of states at the Fermi level of ScPtBi,
indicating that it is a semimetal, not a zero-gap semiconductor, as predicted
earlier. This is in accord with electrical resistivity in ScPtBi, showing no
characteristics of semiconductor. Moreover, below 0.7K we observed an onset of
a superconducting transition, with the resistivity disappearing completely
below 0.23 K.
