Reliable (reported energy within 300 eV of a reference energy)
Comment:
Sb-doped Ge(111)-c(2x8) with a resistivity of 1 ohm cm. The sample was cleaned by cycles of Ar+ ion bombardment and annealing (T = 1100 K). The spectra were recorded at normal emission and 65 degrees. Branching ratio = 0.58. The interface overlayer is 0.8 +- 0.4 ML thick.