Fig. 5
From: Quasi-two-dimensional superconductivity from dimerization of atomically ordered AuTe2Se4/3 cubes
Quasi-two-dimensional nature of superconductivity in AuTe2Se4/3. a I−V curves plotted in a log–log scale at various temperatures near T c. Dash lines represent the η = 1 (black) and 3 (red) curves, respectively. b Temperature dependence of the exponent η deduced from the power-law fitting. Two straight dash lines represent the η = 1 and 3. c R(T) curves plotted as [dln(R)/dT]2/3 versus T. The dash line extrapolates the expected BKT transition at T BKT = 2.69 K
