Synthesis techniques of UTe2 and Exploration of the Orphan phase
Abstract:Â The candidate spin-triplet superconductor Uranium Ditelluride (UTe2) is of deep interest due to the possible topological nature of its superconducting state, which persists up to remarkably high fields. Multiple studies have been performed on UTe2 to fully characterize the different phase transitions as functions of pressure, external magnetic field, and temperature. Remarkably, in the field-polarized state, a separate high-field superconducting pocket is mapped when the field is offset by about 30 degrees between b and c. New studies have shown that a high-field phase persists in samples where a low-field superconducting phase is not observed, alongside the angular width indicating that is sample-dependent in a way that needs to be understood. In this presentation, we explore the electrical measurements on non-superconducting UTe2 samples under pressure and provide a comparative analysis of the various growth techniques developed to date.
[1] Sylvia K. Lewin et al. 2023 Rep. Prog. Phys. 86 114501
[2] Corey E. Frank et al. 2023 arXiv:2304.12392
Advisor: Nick Butch