Reliable (reported energy within 300 eV of a reference energy)
Comment:
n-type Si-doped GaAs(100) with a carrier concentration of 1E16 cm-3. The surface was cleaned by Ar+ ion bombardment (Ep = 1 keV, j = 10 microamperes/cm2, time = 30 min) and subsequently annealed (T = 723 K, time = 15 min) by indirect electron bombardment. This was repeated several times.