<div dir="ltr"><div><div><div>Dear quatum espresso users.<br></div>i tried to compute the polarization of GaN i found that 's equal to =-2.36 in the same larticles i found that's = to 0.029 c/m2 <br></div>such as the polarizaion had 2 tyes haw i can compuye the piezoelctric polarisation.? and why the code give the value underestimaed compared to the exprimental one?<br>
</div>thanks in advance<br clear="all"><div><div><div><div><br>-- <br><div dir="ltr"><font color="#888888"><font color="#ff0000" face="georgia, serif">H.ZAARI</font><div><font face="georgia, serif">PhD Student in </font><span style="font-family:georgia,serif">laboratory of magnetism and physics of high energy</span></div>
<div><font face="georgia, serif">Faculty of Sciences in Rabat - Morocco</font></div>
<div><font face="georgia, serif">Email:<u> halimazaari<font color="#3366ff"><a href="mailto:boujnah.mourad@gmail.com" target="_blank">@gmail.com</a><br></font></u></font><br></div></font></div>
</div></div></div></div></div>