论文标题
场沿硬磁轴诱导UTE2中的多个超导相
Field Induced Multiple Superconducting Phases in UTe2 along Hard Magnetic Axis
论文作者
论文摘要
使用高质量的单晶具有$ t _ {\ rm c} = 2.1 $ k。沿磁场（$ h $）沿磁场（$ h $）探索二硝基尿素中的超导（SC）相图，并在硬磁场（$ h $）下进行探索依赖。水晶质量增加了LFSC阶段的上限临界场，但是$ h^{\ ast} $ $ \ sim $ 15 t（在此出现HFSC阶段）总是相同的。在$ h^{\ ast} $附近的LFSC相位内还观察到相边界签名，这表明以小通量固定力为特征的中间SC相。
The superconducting (SC) phase diagram in uranium ditelluride is explored under magnetic fields ($H$) along the hard magnetic b-axis using a high-quality single crystal with $T_{\rm c} = 2.1$ K. Simultaneous electrical resistivity and AC magnetic susceptibility measurements discern low- and high-field SC (LFSC and HFSC, respectively) phases with contrasting field-angular dependence. Crystal quality increases the upper critical field of the LFSC phase, but the $H^{\ast}$ of $\sim$15 T, at which the HFSC phase appears, is always the same through the various crystals. A phase boundary signature is also observed inside the LFSC phase near $H^{\ast}$, indicating an intermediate SC phase characterized by small flux pinning forces.
