Hi All,<div><br></div><div>Am facing a problem with the cppp.x. in version QE-4.2.1 installed in cineca sp6. </div><div><br></div><div>I have a negatively charged system n(H2O) + excess electron.</div><div><br></div><div>After electronic minimization, when I tried to calculate the spin charge density with cppp.x, am getting the following error : </div>
<div> task # 13</div><div><div> from cppp : error # 1</div><div> IONS not found in data-file.xml </div><div><br></div><div>My input file for cppp.x is : </div><div>&INPUTPP</div><div> prefix = 'h2o-EE',</div>
<div> fileout = 'chg-spin-elec',</div><div> output = 'xsf',</div><div> outdir = './',</div><div> lcharge = .TRUE.</div><div> ndr = 52,</div><div> charge_density = 'spin',</div><div> atomic_number(1) = 8, atomic_number(2) = 1,</div>
<div>/</div><div><br></div><div><br></div><div>Can anybody tell me what is the source of the problem?</div><div><br></div><div>Regards</div><div><br></div><div>Somesh</div><div>-----------------------------------------------------------</div>
<div>Somesh Kr. Bhattacharya</div>Post Doctoral Fellow<br>Room No. 263,<br>Leonardo Building,<br>The Abdus Salam International Centre for Theoretical Physics<br>Strada Costiera, 11<br>I-34014 Trieste<br>Italy<br>Phone: +39-040-2240399<br>
<a href="http://portal.ictp.it/cmsp/members/postdoctoral-fellows/somesh-kumar-bhattacharya/">http://portal.ictp.it/cmsp/members/postdoctoral-fellows/somesh-kumar-bhattacharya/</a><br>
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