Figure 2
From: The same chemical state of carbon gives rise to two peaks in X-ray photoelectron spectroscopy
(a) Al 2p, (b) Au 4f, (c) O 1s, and (d) valence band spectra in the vicinity of the Fermi level recorded from Al and Au foil samples as a function of lateral position, which varies from Al foil (1) to Au foil (9) in steps of 0.1 mm. The size of the area probed in each measurement is 0.3 × 0.7 mm2.
