Sharp Orientation-dependent Quantum Oscillations in HoPtBi

Rare-earth platinum and palladium-bismuthides have been host to rich phenomenon in the search for topological states and Weyl semimetals. YPtBi in particular is host to a spin-split fermi surface which hosts a spin-3/2 superconducting state. In this study we expand this investigation to HoPtBi, a magnetic analog to YPtBi with an AFM ground state and a paramagnetic state above 1.2K. We present orientation-dependent measurements of quantum oscillations in HoPtBi and find a strong orientation dependence near the crystallographic [110] direction very similar to, but phenomenologically distinct from the behavior of YPtBi.