Thermal fluctuation conductivity and dimensionality in iron-based superconductors

【摘要】 The time-dependent Ginzburg–Landau Lawrence–Doniach model is used to investigate the superconducting fluctuation electrical conductivities.The theoretical result based on the self-consistent Gaussian approximation is used to fit the transport measurement data of iron-based superconductors F-doped La OFe As and Ba Fe_2-xNi_xAs₂.We demonstrate that La OFe As shows layered behavior,while Ba Fe_2-xNi_xAs₂ is more of a 3D feature.The conductivity in the region near Tc is well described by the theoretical formula.更多还原

【Abstract】 The time-dependent Ginzburg–Landau Lawrence–Doniach model is used to investigate the superconducting fluctuation electrical conductivities.The theoretical result based on the self-consistent Gaussian approximation is used to fit the transport measurement data of iron-based superconductors F-doped La OFe As and Ba Fe_2-xNi_xAs₂.We demonstrate that La OFe As shows layered behavior,while Ba Fe_2-xNi_xAs₂ is more of a 3D feature.The conductivity in the region near Tc is well described by the theoretical formula.更多还原