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