Fig. 1
From: A unified form of low-energy nodal electronic interactions in hole-doped cuprate superconductors
Experimental electronic self energy Σ” as a function of energy, temperature, and doping. a The self energy is extracted from an ARPES spectrum (top left) located at the node (green cut, bottom right) by taking momentum cuts at constant energy (top right) to extract momentum widths ΔkMDC(ω) (bottom left) which are directly proportional to Σ”(ω). b Measured temperature and energy dependence of Σ” for five different samples from underdoped Tc = 52K (UD52K) through optimal doped Tc = 91K (OPT91K) to overdoped Tc = 75K (OD75K). c Fit results for the three main parameters in the model as a function of doping. The superconducting dome is schematically illustrated by the inverted parabola. The most relevant parameter is the power α which is seen to have a simple linear dependence on doping with value 0.5 very near optimal doping.
