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<div>Dear QE users <BR>
   I want to get the STM image of hydrogen chemisorbed  on graphene.As it required,I have down the SCF and NSCF calculation. When I try to get the STM image with pp.x, it gives the follow errors.   Here I also give my input file,and hope that you can give me some suggestions. <BR>
  &INPUTPP <BR>
 prefix = 'graphene', <BR>
 outdir ='./tmp' , <BR>
 filplot = 'graphene-1.0' , <BR>
 sample_bias = 0.068d0 , <BR>
 plot_num = 5 , <BR>
/ <BR>
&PLOT <BR>
 nfile = 1, <BR>
 filepp(1) = 'graphene_1.0', <BR>
 weight(1) = 1.0 , <BR>
 iflag = 3, <BR>
 output_format= 5, <BR>
 fileout = 'graphene_1.0.xsf', <BR>
 e1(1)=1,e2(1)=0,e3(1)=0, <BR>
 e1(2)=0,e2(2)=1,e3(2)=0, <BR>
 e1(3)=0,e2(3)=0,e3(3)=1, <BR>
 x0(1)=0,x0(2)=0,x0(3)=0.5, <BR>
/ <BR>
The output file <BR>
<BR>
     Program POST-PROC v.4.2.1  starts on 31Aug2011 at 13:51:14 <BR>
<BR>
     This program is part of the open-source Quantum ESPRESSO suite <BR>
     for quantum simulation of materials; please acknowledge <BR>
         "P. Giannozzi et al., J. Phys.:Condens. Matter 21 395502 (2009); <BR>
          URL <A href=http://www.quantum-espresso.org target=_blank>http://www.quantum-espresso.org</A>", <BR>
     in publications or presentations arising from this work. More details at <BR>
     <A href=http://www.quantum-espresso.org/wiki/index.php/Citing_Quantum-ESPRESSO target=_blank>http://www.quantum-espresso.org/wiki/index.php/Citing_Quantum-ESPRESSO</A> <BR>
     file C.pbe-rrkjus.UPF: wavefunction(s)  2S 2P renormalized <BR>
     file H.pbe-rrkjus.UPF: wavefunction(s)  1S renormalized <BR>
<BR>
     negative rho (up, down):  0.724E-04 0.103E-03 <BR>
<BR>
     Calling punch_plot, plot_num =   5 <BR>
<BR>
     negative rho (up, down):  0.724E-04 0.103E-03 <BR>
  SPIN UP <BR>
<BR>
     workfunction     =   -32.0771 +-    18.6272 eV <BR>
     without exchcorr =   -16.8136 +-    15.4478 eV <BR>
  SPIN DOWN <BR>
<BR>
     workfunction     =   -31.9865 +-    18.6314 eV <BR>
     without exchcorr =   -16.8136 +-    15.4478 eV <BR>
<BR>
     Work function written on file workf <BR>
     Planar mean charge written on file charge <BR>
     Use the true wfcs <BR>
     Sample bias          =  0.9252 eV <BR>
<BR>
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% <BR>
     from davcio : error #        10 <BR>
     error while reading from file <BR>
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% <BR>
<BR>
     stopping ... <BR>
~                                                                                                                                                                                 <BR>
~                                                                                                                                                                                 <BR>
~Research laboratory for Computational Materials Science. Institute of Solid State Physis. CAS                                                                                                                                                                                 </div>


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