[Wannier] BoltzWann problem

n16031320 n16031320 at mail.ncku.edu.tw
Sat Mar 5 08:10:16 CET 2016


Dear Wannier90 users and developers:

    I'm a newbie of QE and Wannier90, I'm studying a paper "Thermoelectric of single-layered SnSe sheet" (here is the paper's link:http://www.ncbi.nlm.nih.gov/pubmed/26367369),
and I want to make the same result as the paper's, e.g. seebeck coefficient and conductivity. First I relax the structure, and I follow the step in the example 16 of wannier90 tutorial,
but the result I get is quite different from it:

 Could you please tell me which part I should modify ? Here is my input file below, the profile  in the attachment is the same input file,  

if you want to make a test  you can just download and execute it (you have to modify something like pseudo_dir...etc). 
Thank you in advance.

Yao-Hong Huang

=== here is the vc-relax input file ===
&CONTROL
                 calculation = 'vc-relax' ,
                restart_mode = 'from_scratch' ,
                  pseudo_dir = '/home/yh/下載/pbesol.0.3.1/PSEUDOPOTENTIALS/' ,
               etot_conv_thr = 1D-5 ,
               forc_conv_thr = 3.89D-4 ,
 /
 &SYSTEM
                       ibrav = 8,
                           A = 4.46 ,
                           B = 4.19 ,
                           C = 20.05 ,
                         nat = 4,
                        ntyp = 2,
                     ecutwfc = 30 ,
                     ecutrho = 180 ,
                 occupations = 'smearing' ,
                     degauss = 0.005 ,
                    smearing = 'marzari-vanderbilt' ,
 /
 &ELECTRONS
                    conv_thr = 1D-7 ,
 /
 &IONS
                ion_dynamics = 'bfgs' ,
 /
 &CELL
               cell_dynamics = 'bfgs' ,
                 cell_factor = 2.4 ,
 /
ATOMIC_SPECIES
   Se   78.96000  Se.pbesol-n-kjpaw_psl.0.2.UPF 
   Sn  118.69000  Sn.pbesol-dn-kjpaw_psl.0.2.UPF 
ATOMIC_POSITIONS crystal 
   Se      0.103000000    0.250000000    0.152309000    
   Se      0.603000000    0.750000000    0.000000000    
   Sn      0.521000000    0.750000000    0.136733200    
   Sn      0.021000000    0.250000000    0.015577000    
K_POINTS automatic 
  15 15 1   0 0 0

=== here is the scf input file ===
  &CONTROL
                 calculation = 'scf' ,
                restart_mode = 'from_scratch' ,
                  wf_collect = .true. ,
                      outdir = './' ,
                  pseudo_dir = '/home/yh/下載/upf_files/' ,
                      prefix = 'snse' ,
 /
 &SYSTEM
                       ibrav = 8,
                           A = 4.2355 ,
                           B = 4.2444 ,
                           C = 20.05 ,
                         nat = 4,
                        ntyp = 2,
                     ecutwfc = 30 ,
                     ecutrho = 240 ,
                 occupations = 'smearing' ,
                     degauss = 0.005 ,
                    smearing = 'marzari-vanderbilt' ,
 /
 &ELECTRONS
                    conv_thr = 1D-7 ,
             diagonalization = 'cg' ,
 /
ATOMIC_SPECIES
   Se   78.96000  Se.pbesol-n-kjpaw_psl.0.2.UPF 
   Sn  118.69000  Sn.pbesol-dn-kjpaw_psl.0.2.UPF 
ATOMIC_POSITIONS crystal 
Se       0.061186276   0.250000000   0.143438857
Se       0.561459065   0.750000000   0.008874609
Sn       0.562479227   0.750000000   0.143188541
Sn       0.062875432   0.250000000   0.009117193
K_POINTS automatic 
  15 15 1   0 0 0 
=== here is the nscf input file ===
&CONTROL
                 calculation = 'nscf' ,
                restart_mode = 'from_scratch' ,
                  wf_collect = .true. ,
                      outdir = './' ,
                  pseudo_dir = '/home/yh/下載/upf_files/' ,
                      prefix = 'snse' ,
 /
 &SYSTEM
                       ibrav = 8,
                           A = 4.2355 ,
                           B = 4.2444 ,
                           C = 20.05 ,
                         nat = 4,
                        ntyp = 2,
                     ecutwfc = 30 ,
                     ecutrho = 240 ,
                        nbnd = 30,
                 occupations = 'smearing' ,
                     degauss = 0.005 ,
                    smearing = 'marzari-vanderbilt' ,
 /
 &ELECTRONS
                    conv_thr = 1D-7 ,
             diagonalization = 'cg' ,
              diago_full_acc = .true. ,
 /
ATOMIC_SPECIES
   Se   78.96000  Se.pbesol-n-kjpaw_psl.0.2.UPF 
   Sn  118.69000  Sn.pbesol-dn-kjpaw_psl.0.2.UPF 
ATOMIC_POSITIONS crystal 
Se       0.061186276   0.250000000   0.143438857
Se       0.561459065   0.750000000   0.008874609
Sn       0.562479227   0.750000000   0.143188541
Sn       0.062875432   0.250000000   0.009117193
K_POINTS crystal 
225  
0.000000000    0.000000000    0.000000000      0.004444444 
...
0.933333330    0.933333330    0.000000000      0.004444444 
=== here is the pw2wan input file ===
&inputpp 
   outdir = './'
   prefix = 'snse'
   seedname = 'snse'
   spin_component = 'none'
   write_mmn = .true.
   write_amn = .true.
   write_unk = .false.
=== here is the win input file ===
!!! -- Begin of BoltzWann input -- !!!
boltzwann                    = true
boltz_calc_also_dos          = true
boltz_dos_energy_step        = 0.01
smr_type                     = m-v
boltz_dos_adpt_smr           = false
boltz_dos_smr_fixed_en_width = 0.03
kmesh                        = 40
boltz_mu_min                 = -4.
boltz_mu_max                 = 4.
boltz_mu_step                = 0.01
boltz_temp_min               = 300.
boltz_temp_max               = 300.
boltz_temp_step              = 50
boltz_relax_time             = 29.
!! Next variable is commented because 2 is its default value
!num_elec_per_state          = 2
boltz_2d_dir                 = z
!!! --- End of BoltzWann input --- !!!

#restart           = plot
#bands_plot        = true
#bands_plot_format = xmgr

num_bands         = 30       
num_wann          = 16
dis_win_max       = 20.d0
#dis_froz_max      = 10d0
#dis_num_iter      = 120
#dis_mix_ratio     = 1.d0

#num_iter          = 500
num_print_cycles  = 50
search_shells     = 30

begin unit_cell_cart
ang
 4.2355 0.0000 0.0000
 0.0000 4.2444 0.0000
 0.000  0.0000 20.050
end unit_cell_cart

begin atoms_frac
Se       0.061186276   0.250000000   0.143438857
Se       0.561459065   0.750000000   0.008874609
Sn       0.562479227   0.750000000   0.143188541
Sn       0.062875432   0.250000000   0.009117193
End atoms_frac
    
begin projections     
Sn:l=0;l=1
Se:l=0;l=1
end projections       
    
begin kpoint_path
L 0.00000  0.00000 0.0000 G 0.50000  0.00000 0.0000
G 0.50000  0.00000 0.0000 X 0.50000  0.50000 0.0000
X 0.50000  0.50000 0.0000 K 0.00000  0.50000 0.0000 
K 0.00000  0.50000 0.0000 L 0.00000  0.00000 0.0000
end kpoint_path

mp_grid      = 15 15 1

begin kpoints
 0.00000000  0.00000000  0.00000000 
...
0.93333333  0.93333333  0.00000000 
end kpoints
 

-- 
Yao-Hong Huang

Tainan, Taiwan 
National Cheng Kung University
Department of Mechanical Engineering

 
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