Here the present inventors have assumed that {HEAD ~ the crystal state} of the GaInAs layer under {TAIL ~ a compression stress} is more stable than that under a tension stress 
Here the present inventors have assumed that { HEAD ~ the crystal state } of the GaInAs layer under { TAIL ~ a compression stress } is more stable than that under a tension stress
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH