%ALin, Wen-Chen%ACampbell, Daniel%ARan, Sheng%ALiu, I-Lin%AKim, Hyunsoo%ANevidomskyy, Andriy%AGraf, David%AButch, Nicholas%APaglione, Johnpierre%Anull Ed.%BJournal Name: npj Quantum Materials; Journal Volume: 5; Journal Issue: 1 %D2020%I %JJournal Name: npj Quantum Materials; Journal Volume: 5; Journal Issue: 1 %K %MOSTI ID: 10223380 %PMedium: X %TTuning magnetic confinement of spin-triplet superconductivity %XAbstract Electrical magnetoresistance and tunnel diode oscillator measurements were performed under external magnetic fields up to 41 T applied along the crystallographic b axis (hard axis) of UTe 2 as a function of temperature and applied pressures up to 18.8 kbar. In this work, we track the field-induced first-order transition between superconducting and magnetic field-polarized phases as a function of applied pressure, showing suppression of the transition with increasing pressure until the demise of superconductivity near 16 kbar and the appearance of a pressure-induced ferromagnetic-like ground state that is distinct from the field-polarized phase and stable at zero field. Together with evidence for the evolution of a second superconducting phase and its upper critical field with pressure, we examine the confinement of superconductivity by two orthogonal magnetic phases and the implications for understanding the boundaries of triplet superconductivity. %0Journal Article