 stopping the depositing of Ga when {HEAD ~ sufficient atoms} of Ga have been deposited to form {TAIL ~ the desired Ga monolayer} 
deposited to form
stopping the depositing of Ga when { HEAD ~ sufficient atoms } of Ga have been deposited to form { TAIL ~ the desired Ga monolayer }
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL