Any suggestions. I suppose the energy shift should be the energy
difference between ground state without core-hole and the first exited
state with core-hole. so I did two scf calculations with the following
two input files:<br>
INPUT No.1 <br> &control<br> calculation='scf',<br> pseudo_dir = './pseudo/'<br> outdir='./scratch/',<br> prefix='h2o1_fch',<br> /<br> &system<br> ibrav = 1,<br> celldm(1) = 20.0,<br>
nat=3,<br> ntyp=2,<br> nbnd=24,<br> tot_charge=1.0,<br> ecutwfc=25.0,<br> ecutrho=250.0,<br> /<br> &electrons<br> mixing_beta = 0.3,<br> /<br>ATOMIC_SPECIES<br>O_h 16.0 <b>O.star1s-pbe-van_gipaw.UPF</b><br>
H 1.00 HUSPBE.RRKJ3<br>ATOMIC_POSITIONS angstroms<br>O_h 0.000000000 -0.196963910 0.000000000<br>H 0.000000000 0.398481955 0.771546569<br>H 0.000000000 0.398481955 -0.771546569<br>K_POINTS automatic<br>
1 1 1 0 0 0<br>INPUT No. 2<br> &control<br> calculation='scf',<br> pseudo_dir = './pseudo/'<br> outdir='./scratch/',<br> prefix='h2o1_nch',<br> /<br> &system<br> ibrav = 1,<br>
celldm(1) = 20.0,<br> nat=3,<br> ntyp=2,<br> nbnd=24,<br> tot_charge=0.0,<br> ecutwfc=25.0,<br> ecutrho=250.0,<br> /<br> &electrons<br> mixing_beta = 0.3,<br> /<br>ATOMIC_SPECIES<br>O_h 16.0 <b>O.pbe-van_gipaw.UPF</b><br>
H 1.00 HUSPBE.RRKJ3<br>ATOMIC_POSITIONS angstroms<br>O_h 0.000000000 -0.196963910 0.000000000<br>H 0.000000000 0.398481955 0.771546569<br>H 0.000000000 0.398481955 -0.771546569<br>K_POINTS automatic<br>
1 1 1 0 0 0<br>The above two input files gave two total energies:
-48.79948359 Ry for INPUT No.1 and -34.24285246 Ry for INPUT No.2. What
is confusing is that the energy of system with a core-hole(INPUT No.1)
is lower than that of a system without a core-hole(INPUT No.2). Am I
wrong to assign these two calculations as the system with or w/o a<br>
core-hole? Any suggestions will be highly appreciated..<br><br><div class="gmail_quote">On Mon, Feb 11, 2013 at 3:57 PM, <span dir="ltr"><<a href="mailto:pw_forum-bounces@pwscf.org" target="_blank">pw_forum-bounces@pwscf.org</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0pt 0pt 0pt 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Your message entitled<br>
<br>
calculate the XANES in absolute energy scale using QE<br>
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