Dear Degironc<br>Thanks a lot for your recommendation but i don't know how to make pseudopotential my job is about finding optical properties of ZnS and ZnS nanostructure with using espresso.<br>I will be so appreciate if you help me and find ZnS pseudopotential in your
archive.I need your help. <br>Thanks a lot <br><br><div><span class="gmail_quote">On 12/14/06, <b class="gmail_sendername">degironc</b> <<a href="mailto:degironc@sissa.it">degironc@sissa.it</a>> wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
Dear Amin,<br> using US PP would be preferable but if this is not possible one<br>option is to use a Zn pseudopotential that bury the 3d orbital in the<br>core. You NEED THEN to use non-linear core correction in the<br>
pseudopotential otherwise very poor results are obtained but with NLCC<br>some decent description comes out for semiconductors [see for instance<br>Ferroelectrics 111, 19 (1990); Phys. Rev. B 47, 3588 (1993), Phys.<br>
Rev. Lett. 80, 4939 (1998), Appl. Phys. Lett. 75, 2746 (1999) ].<br> Unfortunately I don't have at hand any of the Zn pseudopotentials<br>used in those works... I ll' try to dig in my archives but you may also<br>try to generate one using
ld1.x code (maybe modifying the input for As<br>or the one for Al that are included in atomoc_doc/pseudo-gen/ ... )<br> stefano<br><br>Amin Babazadeh wrote:<br><br>> Dear Andrea<br>> Thanks a lot for your clear answer.
<br>> I have another question.do you have a any idea for solving my problem<br>> i will appreciate if you give me some idea.<br>> can i find pseudopotential from other cods like abinit?I didn't work<br>> with abinit or it's pseudopotentail but i see in the espresso's
<br>> mailing list that some people use the abinit pseudopotentail.<br>> thanks a lot<br>><br>> On 12/14/06, *Andrea Ferretti* <<a href="mailto:ferretti.andrea@unimore.it">ferretti.andrea@unimore.it</a><br>
> <mailto:<a href="mailto:ferretti.andrea@unimore.it">ferretti.andrea@unimore.it</a>>> wrote:<br>><br>><br>><br>> ><br>> ><br>> %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
<br>> > from epsilon : error # 1<br>> > USPP are not implemented<br>> ><br>> %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%<br>><br>> >
<br>> ><br>> > i think this error says that the epsilon.x doesn't work on US<br>> > pseudopotential<br>><br>> this is exactly the point, you are right...<br>><br>> > ------
<br>> > IF ( okvan ) CALL errore('epsilon','USPP are not implemented',1)<br>> > ------<br>> > i don't know what okvan is?is this mean a spatial kind of USPP i<br>> should use<br>> > or it said that i can't use US pseudopotential.
<br>><br>> okwan is a logical variable which is .TRUE. if at least one of the<br>> pseudopotentials in the calculation is ultrasoft (or vanderbilt<br>> type)...<br>><br>><br>> > I also want to test it with non conserving potential bur
<br>> unfortunately i<br>> > couldn't find any pseudopotential for ZnS.<br>><br>> unfortunately, while S does not need USPP, Zn is it quite hard in<br>> terms of<br>> cutoff energy, and therefore, after a brief check, it seems the
<br>> pseudopage<br>> of espresso does not contain any norm-conserving pseudo for Zn.<br>><br>> andrea<br>> _______________________________________________<br>> Pw_forum mailing list<br>
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</div><br><br clear="all"><br>-- <br>AMIN