The silicide from the source junction moves toward the drain junction through {HEAD ~ the channel} as a result of {TAIL ~ the electromigration} 
The silicide from the source junction moves toward the drain junction through { HEAD ~ the channel } as a result of { TAIL ~ the electromigration }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL