论文标题
超级导体中的涡旋晶格熔融线与顺磁性成对
Vortex Lattice Melting Line in Superconductors with Paramagnetic Pair-Breaking
论文作者
论文摘要
在高磁场中，对铁基超导体FESE进行的最新实验表明，波动诱导的涡流液体状态和Fulde-Ferrell-Larkin-ovchinnikov（FFLO）涡流晶格都存在。为了在II型超导型（SC）波动（SC）波动和强烈的顺磁性配对（PPB）（例如FESE）（例如FESE）（例如FESE）（例如FESE）中的II型超导体中的磁相图上进行一般图像，从理论上研究了FFLO国家的情况下，在理论上研究了涡旋晶格熔融曲线HM（T）。通常，PPB倾向于缩小介于HC2（T）和HM（T）之间的涡流液体状态。特别地，发现涡流液体状态在进入的温度范围内迅速收缩，在该温度范围内，在平均场理论中，具有平行于磁场的周期性调节的FFLO状态稳定。根据目前的结果，讨论了平行和垂直场配置中FESE的高场SC相图。
Recent experiments on the Iron-based superconductor FeSe in a high magnetic field have suggested the presence of both the fluctuation-induced vortex liquid regime and a Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) vortex lattice. To get a general picture on the magnetic phase diagram in type II superconductors with strong superconducting (SC) fluctuation and strong paramagnetic pair-breaking (PPB) such as FeSe, the vortex lattice melting curve Hm(T) is theoretically investigated in the situations where a FFLO state is expected to occur. In general, the PPB tends to narrow the vortex liquid regime intervening between Hc2(T) and Hm(T). In particular, the vortex liquid regime is found to rapidly shrink upon entering, by cooling, the temperature range in which the FFLO state with a periodic modulation parallel to the magnetic field is stable in the mean field theory. Based on the present results, the high field SC phase diagrams of FeSe in the parallel and perpendicular field configurations are discussed.
