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 UTe₂ 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.

在沿UTe ₂的晶体b轴（硬轴）施加的最大41 T的外部磁场下，进行了磁阻和隧道二极管振荡器的测量随温度和最高18.8 kbar的施加压力而变化。在这项工作中，我们跟踪了超导相和磁场极化相之间的场感应一阶跃迁随所施加压力的变化，显示了随着压力的增大而抑制的跃迁，直到超导性在16 kbar附近消失和出现了压力感应的类似铁磁的基态，它不同于场极化相位，并且在零场下稳定。结合第二超导相及其在压力下的上临界场的演化的证据，我们研究了两个正交磁相对超导的限制，以及对理解三重态超导边界的启示。