“Nodal Gap” Induced by the Incommensurate Diagonal Spin Density Modulation in Underdoped High- Superconductors

Figure 2

(a) The energy dependence of the spectral functions for different Fermi angle , with the points and the Fermi angle being shown in (b). (c) The energy gap as a function of the Fermi angle. The closed circles are the energy gap obtained from (a). The red solid line is a polynomial fitting for the data. The dashed line is the -wave superconducting gap magnitude.