Thermal fluctuation conductivity and dimensionality in iron-based superconductors

Wang Rui^{1, 2, †,}, Li Ding-Ping^{1, 2, ‡,}

The schematic H–T phase diagram. In the vortex liquid region, there are three regions, region I (the 3D region), region III (the 2D region), and region II (the crossover region). T_c is the transition temperature, is the mean-field transition temperature, and the upper critical magnetic field is .