“…At 250°C and dynamic hydrogen pressure of 5 ϫ 10 −6 Torr the native oxides were removed completely from the surface within 30-60 min, depending on the oxide layer thickness. 5,6 Annealing the MH cleaned samples at 400°C for 2 h, under UHV conditions after the MHC process, did not result in any significant change in the XPS or AES spectra. At dynamic H 2 pressures higher than 3 ϫ 10 −6 Torr or at temperatures higher than 250°C the oxides were removed faster; however, the In/ Sb peak ratio increased and the substrate surface started to roughen showing small round bumps, most probably In droplets.…”