Title: Superconductivity and Quantum Oscillations in YPtBi Under Pressure
Abstract: The half-Heusler RPtBi series is home to a variety of magnetic and superconducting compounds. The nonmagnetic members are especially interesting as they are thought to host topologically non-trivial band structures. The semimetal YPtBi has gathered much interest as an exciting platform for unconventional superconductivity, with a robust superconducting state that is nearly unaffected by disorder and changes in carrier density spanning three orders of magnitude. Furthermore, DFT calculations and quantum oscillation measurements point to the existence of states with j=3/2 total angular momentum near the Fermi level, which could allow exotic, high-spin pairing states. An important tool for studying unconventional superconductivity in these systems is the application of hydrostatic pressure. While YPtBi has been studied extensively since its discovery as a superconductor, its behavior under pressure has remained relatively underexplored, with little done to investigate its electronic structure under pressure. Here, we present magnetotransport data taken on high-purity, semimetallic YPtBi under pressure, and discuss the effects of pressure on the resistivity, quantum oscillations, and superconducting transition in YPtBi.