Fig. 3: Comparison of Field-Temperature Phase Diagrams for Orphan Superconducting and High \({{T}_{c}}_{{{SC}}_{1}}\), High RRR UTe₂.

In both cases, the field polarized normal state (FP) is indicated in red, and regions of superconductivity (SC₁ at low field and SC_FP at high field) are in dark blue and bounded by lines (solid in between temperature points, dashed when extrapolating) intended as guides to the eye. See Supplemental Information for detailed information regarding the determination of phase boundaries and angles. a The field-temperature phase diagram of orphan high field superconductivity in Orphan UTe₂ at 38.3^o offset between b and c. Points between which R = 0 Ω are designated with dark blue dotted circles, and the regions between temperature points have been interpolated a dashed-blue boarder and estimated to T = 0 K. Dashed lines between FP and either the low field normal state or SC_FP indicate regions where this boarder has been estimated to match scaling with b. Purple “-” crossed and red “+” crossed diamonds indicate 50% of resistive transitions between phases. b The field-temperature phase diagram of SC_FP in \({{T}_{c}}_{{{SC}}_{1}}\approx 1.85K\), High-R crystal. Green and blue crossed circles indicate transitions to SC₁ and SC_FP, respectively as indicated by changes in PDO frequency (see SI for more detail). The 0 applied field \({{T}_{c}}_{{{SC}}_{1}}\), indicated by a black crossed pentagon, was determined via four wire resistance in a Quantum Design Physical Properties Measurement System.