<div>Dear pwscf practitioners,</div>
<div> </div>
<div>I am trying to perform some calculations on a sodium zeolite material.</div>
<div>The zeolite framework has a nice crystal structure while the Na ions</div>
<div>are randomly distributed inside the framework.</div>
<div> </div>
<div>So I am thinking of doing calculations on the zeolite framework only, </div>
<div>with proper charge and leaving out the Na ions.</div>
<div> </div>
<div>I was able to set nelec and the calculation went ok.</div>
<div> </div>
<div>Now I am concerned about the correction to the total energy. I know</div>
<div>that for charged cluster, one should do post-processing and get the</div>
<div>Makov-Payne correction. But what about charged period structure?</div>
<div>Do we also need to this correction and is this correction appropriate</div>
<div>here?</div>
<div> </div>
<div>Thanks in advance for any help that you may provide.</div>
<div> </div>
<div>-Peter<br><br>********************************************<br>Peter Winey, Ph.D., DuPont<br><a href="mailto:peterwiney@gmail.com">peterwiney@gmail.com</a><br>******************************************** </div>