论文标题
调整自旋三旋转超导的磁性限制
Tuning magnetic confinement of spin-triplet superconductivity
论文作者
论文摘要
电磁场和隧道二极管振荡器测量在沿UTE $ _2 $的晶体学B轴（硬轴）施加的外部磁场下进行，这是温度和高达18.8 kbar的施加压力的函数。在这项工作中，我们跟踪了超导和磁场偏振相之间的田间诱导的一阶过渡，这是施加压力的函数，显示出越来越多的压力抑制过渡，直到超导性的消亡接近16 kbar，并且出现了压力诱导的类似铁磁性的基态状态，与现场固定相位的ZERO相位和稳定的ZERO相位不同。加上第二个超导阶段演变及其上部临界场随压力的证据，我们研究了两个正交磁相通过两个正交磁相限制，以及对理解三重态超导性边界的影响。
Electrical magnetoresistance and tunnel diode oscillator measurements were performed under external magnetic fields up to 41 T applied along the crystallographic b-axis (hard axis) of UTe$_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 a 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.
