Fig. 5
From: RF injection scanning tunneling spectroscopy of a superconducting NbSe2 surface

(a) Color mapping of the STS conductance shown in Fig. 2(a). The x-axis represents the sample bias, while the y-axis represents the RF electric field at the output. The color code adopted is shown at the top. (b) Magnified map of the small RF power area in (a). Mark A shows the position of the crossing of two inward components.