论文标题
超导体的波动电导率和涡旋态，强烈的顺磁对破裂
Fluctuation Conductivity and Vortex State in Superconductor with Strong Paramagnetic Pair Breaking
论文作者
论文摘要
通过在低温下和高磁场上关注量子状态，研究了具有强鲍里磁磁对破裂（PPB）的中等清洁II型超导体的波动电导率。首先，可以指出，随着PPB效应变得更强大，量子超导的波动通常会增强，因此Aslamasov-Larkin（Al）波动电导率在冷却时会消失。此外，通过检查波动电导率的其他（DOS和Maki-Thompson（MT））术语，发现所得的总导电率的场依赖性显着取决于在低温下在强度强的PPB扮演重要角色下在低温下的涡旋晶格（或玻璃）序状状态。通过将当前的理论结果与波动引起的负磁磁性行为进行比较，进入PPB诱导的硒化铁（FESE）新颖的SC阶段（FESE），可以说，在第二低（$ n = 1 $）Landau级别中，超导顺序参数的涡流状态在fESE中较低（$ n = 1 $）在平行现场配置中均未实现，并且在平行的现场配置中均未实现。
The fluctuation conductivity of a moderately clean type II superconductor with strong Pauli paramagnetic pair-breaking (PPB) is studied by focusing on the quantum regime at low temperatures and in high magnetic fields. First, it is pointed out that, as the PPB effect becomes stronger, the quantum superconducting fluctuation is generally enhanced so that the Aslamasov-Larkin (AL) fluctuation conductivity tends to vanish upon cooling. Further, by examining other (the DOS and the Maki-Thompson (MT)) terms of the fluctuation conductivity, the field dependence of the resulting total conductivity is found to depend significantly on the type of the vortex lattice (or, glass) ordered state at low temperatures where the strong PPB plays important roles. By comparing the present theoretical results with the fluctuation-induced negative magnetoresistance behavior upon entering a PPB-induced novel SC phase of Iron selenide (FeSe), it is argued that the vortex matter states of the superconducting order parameter in the second lowest ($n=1$) Landau level are realized in FeSe in the parallel field configuration in high fields and at low temperatures
