Characterization of polycrystalline LaBaCaCu3O7−δ superconductors in the fluctuation regime

Superconducting fluctuation behavior and infrared absorption properties of Tl1−Cu Sr1.6Yb0.4CaCu2O7 and Tl0.5Pb0.5Sr2−Mg Ca0.8Yb0.2Cu2O7− ceramics

“…Experimental accessibility of the region has brought about analyses of dimensionality and amplitude of fluctuation for several HTSC compounds, for example, Bi-based superconductor [5,6] and LBCCO [24] which displayed 2D superconducting fluctuation behavior (SFB) and Y123 [9,25] which showed transition from 2D to 3D fluctuation with decreasing temperature. Interestingly, (Hg,Tl)1223 have been reported to show both 2D-3D and 1D-2D transitions [26].…”