Universal nodal behavior in the thermal conductivity of superconducting UTe2

Soon after the discovery of superconductivity in uranium ditelluride (UTe2), evidence began accumulating that the pairing state is odd-parity (triplet). This opens the possibility of topological superconductivity in UTe2 and motivates a careful study of the presence or absence of nodes and their topology/location. In this talk I will present data on the thermal transport of UTe2 in its superconducting state. These data were collected on a series of samples with transition temperatures ranging from 1.6K to 2.1K, and residual resistivity ratios from 30 to 600, synthesized by both chemical vapor transport and flux methods. We will discuss the evolution of the zero-temperature intercept of kappa/T as a function magnetic field applied along the crystal's a-axis and its consistency with a point node gap structure, as well as the significance of these results in the context of other experiments on the superconducting order parameter in UTe2.