Reliable (reported energy within 300 eV of a reference energy)
Comment:
n-type (Si-doped) and p-type (Be-doped) GaAs(001)-(2x4) with a carrier concentration of 5E17 cm-3. The intensity ratio of the Gaussian/Lorentzian components was 60/40. The As cap was desorbed by heating at ~723 K for several minutes. Branching ratio = 0.65. The spectra were recorded at normal emission.