The reentrant superconductivity is the peculiar phenomenon observed in paramagnetic metal UTe₂ in magnetic field parallel to the hard magnetisation axis. It is difficult to explain it in terms of field dependent intensity of magnetic fluctuations like it is done for explanation of the formally similar phenomena in the ferromagnetic uranium superconductors URhGe, UCoGe. Extremely large initial slope of the upper critical field temperature dependence suggests that the phenomenon has quasi-two-dimensional nature. Indeed, according to the recent band structure calculations by Y. Xu et al. (Phys. Rev. Lett. 123, 217002 (2019)) the Fermi surface of UTe₂ consists of two types slightly corrugated cylinders. The theory of reentrant superconductivity in UTe₂ based on its quasi-two-dimensional structure is presented here.

中文翻译：

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UTe 2中的折返超导性

折返超导性是在平行于硬磁化轴的磁场中在顺磁性金属UTe ₂中观察到的特殊现象。很难像磁场解释强度那样解释磁场，就像解释铁磁性铀超导体URhGe，UCoGe中形式上相似的现象一样。上部临界场温度依赖性的极大的初始斜率表明该现象具有准二维性质。实际上，根据Y. Xu等人最近的能带结构计算。（物理评论快报。123，217002（2019））UTE的费米表面₂由两种类型的略微波纹气缸。UTe重入超导理论_这里基于其准二维结构示出图2。