Anisotropic magnetic field effect on fluctuating superconductivity in a strongly electron correlated system

最近，涨落超导性（FSC）引起了人们的关注，因为它将是赝能隙形成的最有趣的解释之一，赝能隙形成可能是强关联二维（2D）超导体的本征性质。虽然已经进行了大量的实验来揭示FSC的起源，但到目前为止仍然不清楚。在这项研究中，调查的起源，我们进行了电阻和磁矩的四种超导体（有机物和铜酸盐），这具有不同的转变温度（Tc），电子相关和维数，分别测量。结果表明，无论电子相关强度和Tc的大小，在所有的超导体中都观察到了FSC。相反，FSC出现的温度在高2D样品中趋于增强。因此，FSC的起源可能与维数有关，而不是与电子关联和Tc有关。

Recently, fluctuating superconductivity (FSC) have attracted attention because it will be one of the most intriguing interpretations of the pseudogap formation, which is likely an intrinsic property in strongly correlated two-dimensional (2D) superconductors. Although a number of experiments has been performed to reveal origin of FSC, it remains unclear so far. In this study, to investigate the origin, we have performed the resistance and magnetic torque measurements for four kinds of superconductors (organics and cuprates), which have different transition temperatures (Tc), electron correlation and dimensionality, respectively. As a result, the FSC was observed in all of the superconductors irrespective of the electron correlation strength and magnitude of Tc. Instead, the temperatures where the FSC appears, tend to enhance in the high 2D sample. Consequently, the origin of FSC can connect to dimensionality rather than the electron correlation and Tc.