[Pw_forum] Supercell in GWW calculations

2010-10-23 Thread shudong wang
Dear developers:
I confused about the size of supercell in GWW calculations. What the
supercell should I use,2x2x2 or 3x3x3 ? Does it must be used in the GWW?


Thanks in advance!

S. D. Wang
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[Pw_forum] About fhi2UPF.x

2010-10-13 Thread shudong wang
Dear developers and users:
I want to use fhi2upf.x to convert 27-Co.LDA.fhi to upf format, but I have
some questions:
1.What the wavefunction1-4 should I write? For my Co atom, which is right
below?

Wavefunction # 1: label, occupancy > 4S 2
Wavefunction # 2: label, occupancy > 4P 0
Wavefunction # 3: label, occupancy > 3D 7
Wavefunction # 4: label, occupancy > 4F 0
or
 Wavefunction # 1: label, occupancy > 3S 2
Wavefunction # 2: label, occupancy > 3P 6
Wavefunction # 3: label, occupancy > 4S 2
Wavefunction # 4: label, occupancy > 3D 7

How can I dicide the label for different atom? What is the "rule" for this?

Another quetion:

If my converted pp is not precise, how can I solve this? Which parameters
should I change to enhance the precision??

Thanks!
SDWang

Southeast University in Nanjing,China
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[Pw_forum] plot the wave functions

2010-10-08 Thread shudong wang
Dear developers and users:
How can I get the wave functions of top valence band and bottom conduction
band? I want to plot the functions at some special points like gamma.

Thanks!

S.D.Wang
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[Pw_forum] TDDFT

2010-07-24 Thread shudong wang
Dear developers:
I want to know how can I use TDDFT in pwscf,or when it can be used?
Thanks!
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[Pw_forum] GWW of bulk silicon

2010-07-06 Thread shudong wang
Dear all:
I have performed GWW calculation of bulk silicon with PWSCF V4.2. In the
output file there is no the file named 'band.dat'. How can I get the
quasiparticle energy gap??Or which output file include this information
about quasiparticle  energy?

Thanks!
S  D  Wang
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[Pw_forum] About GWW

2010-07-05 Thread shudong wang
Dear developers:
I use GWW to calculate my 2D unit cell with 2C and 2F atoms,first I have
performed  scf_head.in with pw.x code ,it works well.Then I have a ph
calculation at Gamma with head.x but it appears:

 %%
 task # 0
 from solve_e : error # 1
 called in the wrong case
 %%
My input file is:

&control
title='gf'
calculation='scf',
restart_mode='from_scratch',
prefix='gf'
pseudo_dir = '/home/sdwang/espresso-4.1.2/pseudo',
outdir='/home/sdwang/gw/tmp'
/
&system
ibrav = 4, celldm(1)=4.839,celldm(3)=7.023,nat=4, ntyp=2,
ecutwfc = 60.0,nosym=.false.,
occupations='smearing',degauss=0.01,smearing='gaussian'
/
&electrons
diagonalization='david',
conv_thr =  1.0d-10,
mixing_beta = 0.5,
startingwfc='random',
/
ATOMIC_SPECIES
 C   12.0  C.pz-vbc.UPF
 F   19.0  F.pz-rrkj.UPF
ATOMIC_POSITIONS (crystal)
C0.331724716   0.667136313   0.096514182
C0.665075100   0.333783657   0.069110636
F0.331574264   0.667153962   0.171629429
F0.665085920   0.333706069  -0.005994247
K_POINTS (automatic)
9 9 1  0 0 0


phonons of gf at Gamma
 &inputph
  tr2_ph=1.d-4,
  prefix='gf',
  outdir='/home/sdwang/gw/tmp/',
  epsil=.false.,
  amass(1)=12.0,
  amass(2)=19.0
  fildyn='gf.dynG',
  recover=.false.
  trans=.false.
  l_head=.true.
  omega_gauss=20.
  n_gauss=79
  grid_type=2
  niter_ph=1
 /
0.0 0.0 0.0
What is my problem?
Thanks!!
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[Pw_forum] norm-conserving potential of Fluorine

2010-06-27 Thread shudong wang
Dear all:

How can I get the norm-conserving potential of Fluorine? Who has it and
please help me.

Thanks!
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[Pw_forum] About GWW

2010-06-01 Thread shudong wang
Dear developers:
I kown the V4.2 pwscf can have performed GW calculation. Does it can deal
with various system?For example, cluster, molecule, or quantum dot and
extended system like periodic solids?
Thanks!
SDWang

Southeast University , Nanjing ,China
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[Pw_forum] band jagged

2010-05-19 Thread shudong wang
Yes, I have tested with the same system.But v4.1.2 are OK.
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[Pw_forum] band jagged

2010-05-18 Thread shudong wang
Dear developers:

I used v4.1.2 recalculate it, it is well.My unit cell has 4C and 2O.Is there
something different between v4.1.2 and v4.2? Why the v4.2 has a jagged
band?Is it a bug?
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[Pw_forum] band jagged

2010-05-17 Thread shudong wang
Dear developers;
I used v4.2 to calculate band structures of graphene,but the structures have
a jagged behaviour in high energy region. Why it is ?

Thanks!

S D Wang

Southeast University ,Nanjing,China
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[Pw_forum] ESPRESSO-4.2

2010-05-15 Thread shudong wang
Dear developers:
I use v4.2 do relax calculation,but it appears:

Message from routine iosys:
 pot_extrapolation='second_order' not available, using 'atomic'
 Message from routine iosys:
 wfc_extrapolation='second_order' not available, using 'atomic'

my input file is :
&control
title='go'
calculation='relax',
restart_mode='from_scratch',
prefix='go'
pseudo_dir = '/home/sdwang/espresso-4.1.2/pseudo',
outdir='/home/sdwang/GO/go/tmp'
tprnfor=.true.
tstress=.true.
/
&system
ibrav = 8, celldm(1)=4.650,celldm(2)=1.7317, celldm(3)=7.3170 ,nat=6,
ntyp=2,
ecutwfc = 40.0,occupations='smearing',degauss=0.01,smearing='gaussian'
/
&electrons
mixing_beta = 0.7
conv_thr =  1.0d-8
/
&ions
 ion_dynamics='bfgs',
 bfgs_ndim=1,
 pot_extrapolation="second_order",
 wfc_extrapolation="second_order",
/
ATOMIC_SPECIES
 C   12.0  C.pz-vbc.UPF
 O   16.0  O.pz-mt.UPF
ATOMIC_POSITIONS (crystal)
C 0.24680   0.16962   0.07944
C 0.74680   0.33632   0.07944
C 0.24680   0.83642   0.07944
C 0.74680   0.66972   0.07944
O 0.77674   0.49750   0.15405
O 0.23131   0.98180   0.00297
K_POINTS (automatic)
7 7 1 0 00
What is the problem?
Thanks!

S D Wang
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[Pw_forum] phonon lifetime

2010-05-14 Thread shudong wang
Dear all:
Can I get the phonon lifetime with pwscf code? Is anybody have some advice?

Thanks in advance!

S D Wang

Southeast University,Nanjing,China
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[Pw_forum] About example07

2010-05-06 Thread shudong wang
Dear all:
I want to calculate el-ph coulpling but I do not kwon what in the example07
means:
The fourth column represents the el-ph coulpling constant lamda??? And the
"dos_el" means what? Is it the Eliashberg function???
If I want to get the phonon energy-Eliashberg function plot,what should I
do???
Thanks in advance!

S.D.Wang

 Electron-phonon coupling constant, lambda
 Broadening   0.0050 lambda   0.2057 dos_el   1.3387
 Broadening   0.0100 lambda   0.3844 dos_el   1.8818
 Broadening   0.0150 lambda   0.3957 dos_el   2.1232
 Broadening   0.0200 lambda   0.3742 dos_el   2.2498
 Broadening   0.0250 lambda   0.3545 dos_el   2.3298
 Broadening   0.0300 lambda   0.3445 dos_el   2.3960
 Broadening   0.0350 lambda   0.3422 dos_el   2.4552
 Broadening   0.0400 lambda   0.3442 dos_el   2.5079
 Broadening   0.0450 lambda   0.3476 dos_el   2.5530
 Broadening   0.0500 lambda   0.3510 dos_el   2.5896
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[Pw_forum] regular k-point grid

2010-05-01 Thread shudong wang
Dear all:

How can I get the regular k-point grid in the complete Brillouin zone? Is
anybody has a code?

Thanks in advance!

S D Wang
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[Pw_forum] About kpoint

2010-04-30 Thread shudong wang
Dear developers:

When I perform nscf calculation, it needs generation of k-point meshes .What
code can get the meshes in PWSCF?
Thanks!
Yours

S.D.Wang
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[Pw_forum] band calculation

2010-04-25 Thread shudong wang
Dear all:
I calculate the band structure of some materials,but I can not find the
Fermi-energy in the scf.out file?Where is it?
Wy procedure are: scf, bands(nscf), bands.x, plotband.x, is it right?
Thanks!
S.D.Wang
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[Pw_forum] phonon dispersion

2010-04-15 Thread shudong wang
Dear developers:

I performed phonon dispersion of two-dimensional Si with two layer silicon
atoms passivated by H atom (Si4H2) ,and there are two branches have frequncy
higher than others(in red), and the result is :
&plot nbnd=  18, nks=  61 /
   0.00  0.00  0.00
 -16.5775   -7.8790   -3.1558   97.8351  105.6592  222.2850
 390.0047  474.5206  478.3406  482.2919  494.0081  502.5633
 602.3562  620.0962  648.4555  660.1258 2110.7548 2116.3744
   0.016667  0.016667  0.00
 -16.14814.8616   17.1698   98.9575  107.0761  222.1388
 389.3945  474.3367  478.1513  482.3187  493.1097  502.8504
 602.4038  620.8876  648.1560  660.0547 2110.3105 2116.3290
   0.03  0.03  0.00
 -14.9035   13.0400   36.1211  102.1200  111.2414  221.7379
 387.5912  473.7711  477.6237  482.2742  490.9342  503.3493
 602.4055  623.2746  647.2722  659.9022 2109.0949 2116.0984





my input files are:

&inputph
tr2_ph=1.0d-10,
prefix='s2',
fildvscf='s2dv',
amass(1)=28.0855,
amass(2)=1.0
outdir='/home/sdwang/aa/tmp/',
fildyn='s2.dyn',
elph=.false.,
trans=.true.,
ldisp=.true.
nq1=4, nq2=4, nq3=1
/
 &input
asr='simple',amass(1)=28.0855,amass(2)=1.0,
flfrc='s2444.fc',flfrq='s2444.freq',la2f=.false.,dos=.false.,
/
61
 0.00  0.00  0.00  1.00
 0.016667  0.016667  0.00  1.00
 0.03  0.03  0.00  1.00
 0.05  0.05  0.00  1.00
...

&input
zasr='simple', fildyn='s2.dyn', flfrc='s2444.fc', la2F=.false.
/

What's the matter?

Thanks!

S.D.Wang

Southeast University in Nanjing ,China.
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[Pw_forum] disentangle.x

2010-04-07 Thread shudong wang
Dear developers.

I used disentangle.x code in WanT package do some calculation, but it stops
here

  ==
  =  Starting Iteration loop   =
  ==
  Initial trial subspace: projected localized orbitals
p0_13395:  p4_error: interrupt SIGx: 6

what is the problem?

I run it serial.
Thanks in advance!

S.D.Wang

Southeast University in Nanjing,China
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[Pw_forum] About wannier center

2010-04-05 Thread shudong wang
dear all:

When I use the disentangle.x code in WanT package, the output file is :

  ==
  ==
  = *** WanT *** Wannier Transport Code=
  =(www.wannier-transport.org) =
  =  Ultra Soft Pseudopotential Implem.=
  ==
  ==

  Program   v. 2.1.0  starts ...
  Date  5Apr2010 at 17:39:53
 Parallel run, # proc:8
  BUILT :Thu Apr  1 20:30:37 2010
   HOST :x86_64-unknown-linux-gnu
   ARCH :amd64
 CC :icc
CPP :cpp
F90 :mpif90
F77 :ifort
 DFLAGS :-D__INTEL -D__FFTW -D__USE_INTERNAL_FFTW -D__MPI
-D__PARA
  BLAS LIBS :-L/usr/local/intel/cmkl/8.0/lib/em64t -lmkl_em64t
-lguide -lpthread
LAPACK LIBS :-lmkl_lapack
   FFT LIBS :
  MASS LIBS :

  DFT-data fmt automaticaly detected: qexml
---
--

it stop here have not any other information,and my input file for
disentangle is :


&CONTROL
   prefix = '33'
   postfix = '_WanT'
   work_dir = '/home/sdwang/33/'
   verbosity = 'medium'
   wantdata_fmt = 'binary'
/
&SUBSPACE
   dimwann = 50
   win_max = 10.0
   win_min=-15.0
   maxiter_dis = 3000
/
&LOCALIZATION
   a_condmin = 20.0
   maxiter0_wan = 1000,
   alpha0_wan = 0.5
   maxiter1_wan = 3000,
   alpha1_wan = 0.5
   ncg = 9
/
WANNIER_CENTERS {crystal}
1gauss  0.00.087520.101960  0   0.5  1.0
1gauss  0.101960.087520.00  0   0.5  1.0
1gauss  0.203920.087520.101960  0   0.5  1.0
1gauss  0.101960.175030.101960  0   0.5  1.0
1gauss  0.00.00.203920  0   0.5  1.0
1gauss  0.00.087520.305870  0   0.5  1.0
1gauss  0.101960.00.305870  0   0.5  1.0
1gauss  0.101960.087520.203920  0   0.5  1.0
1gauss  0.203920.00.203920  0   0.5  1.0
1gauss  0.203920.087520.305870  0   0.5  1.0
1gauss  0.305870.087520.203920  0   0.5  1.0
1gauss  0.00.175030.203920  0   0.5  1.0
1gauss  0.101960.175030.305870  0   0.5  1.0
1gauss  0.101960.262550.203920  0   0.5  1.0
1gauss  0.00.820710.101960  0   0.5  1.0
1gauss  0.101960.733200.101960  0   0.5  1.0
1gauss  0.101960.820710.00  0   0.5  1.0
1gauss  0.203920.820710.101960  0   0.5  1.0
1gauss  0.101960.645680.203920  0   0.5  1.0
1gauss  0.00.820710.305870  0   0.5  1.0
1gauss  0.101960.733200.305870  0   0.5  1.0
1gauss  0.101960.820710.203910  0   0.5  1.0
1gauss  0.203920.733200.203910  0   0.5  1.0
1gauss  0.203920.820710.305870  0   0.5  1.0
1gauss  0.305870.820710.203910  0   0.5  1.0
1gauss  0.101960.909530.101960  0   0.5  1.0
1gauss  0.00.909530.203920  0   0.5  1.0
1gauss  0.203920.909530.203920  0   0.5  1.0
1gauss  0.104560.561910.203540  0   0.5  1.0
1gauss  0.104560.346290.203540  0   0.5  1.0
1gauss  0.104560.510410.203540  0   0.5  1.0
1gauss  0.104560.454100.203540  0   0.5  1.0
1gauss  0.104560.397790.203540  0   0.5  1.0
the atoms are 28 Au,2N,3C

What is my problem?

Thanks in advance!

S.D. Wang

Southeast University in Nanjing China.
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[Pw_forum] About midpoint.x

2010-04-01 Thread shudong wang
Dear all:
 I use the midpoint.x to get the wannier centers in WanT code, but I have
some problem as following in output file:

 ==
  ==
  = *** WanT *** Wannier Transport Code=
  =(www.wannier-transport.org) =
  =  Ultra Soft Pseudopotential Implem.=
  ==
  ==

  Program   v. 2.1.0  starts ...
  Date  1Apr2010 at 21:59:41
 Serial run.
  BUILT :Thu Apr  1 20:30:37 2010
   HOST :x86_64-unknown-linux-gnu
   ARCH :amd64
 CC :icc
CPP :cpp
F90 :mpif90
F77 :ifort
 DFLAGS :-D__INTEL -D__FFTW -D__USE_INTERNAL_FFTW -D__MPI
-D__PARA
  BLAS LIBS :-L/usr/local/intel/cmkl/8.0/lib/em64t -lmkl_em64t
-lguide -lpthread
LAPACK LIBS :-lmkl_lapack
   FFT LIBS :
  MASS LIBS :

 *** from PE: 0
 *** in routine : io_init
 *** error msg. : invalid dftdata_fmt =
 *** error code : 1
 *** aborting ***
My input file is :
&INPUT
   prefix  = 'pt_h2_pt',
   work_dir =
'/home/sdwang/WanT/tmp/test11/pt_h2_pt.export/index.xml',
   output_fmt  =  "crystal"
   rcut  =  5.0
   toll  =  0.10
/
What is my problem?
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[Pw_forum] disentangle.x

2010-04-01 Thread shudong wang
Dear developers:

I confused what is the input file of disentangle.x code?

S.D.Wang

Southeast Universy in Nanjing , China

Tel:+86 15050597535
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