Dear All,<br><br clear="all">Has anyone ever tried to implement the calculation of the stress tensor into Wien? Is there something in the method that prevents its calculation?<br><br>I read the Nielsen PRB 32, 3780 (1985) where stress calculation is described for local functionals. There are 5 contributions in equation 30 of that paper. Is any in particular difficult for LAPW methods?<br>
<br>Many thanks,<br>David Tompsett.<br>