Superconductivity in in the Topological Half Heusler YPtBi

The noncentrosymmetric half-Heusler crystal structure holds a wide variety of materials with unique phenomena, including unconventional superconductivity, nontrivial topological band structures, and magnetic order. Of these materials we report on YPtBi, a j=3/2 superconductor with an extremely low carrier density that goes beyond the limits of current theory. We report on a comprehensive study of superconducting and normal state properties of this system as a function of disorder (magnetic and non-magnetic) and carrier density, varying each by over 40 times and three orders of magnitude, respectively. We will discuss the evolution of normal state transport, superconducting transition temperature, upper critical field and quantum oscillations measurements of the Fermi surface through this range.