[Wannier] Principle layers

Haichang Lu hl432 at cam.ac.uk
Tue May 16 15:47:32 CEST 2017


Dear All,
Below is the input file:
num_bands       = 554
num_wann        =  461
conv_tol        = 1.0d-7
conv_window     = 20

translate_home_cell = .true.

!dis_win_max     = 7.5
!dis_froz_max    = -2.30
!dis_conv_tol    = 1.0d-9
!dis_conv_window = 20
!guiding_centres = .true.
!num_print_cycles = 10

# Transport
transport = .true.
transport_mode = lcr
tran_read_ht = .false.
one_dim_axis = z
fermi_energy = 0
tran_win_min = -15
tran_win_max = 15
tran_energy_step = 0.01
translation_centre_frac = 0.5 0.5 0.5
tran_num_cell_ll = 1
tran_num_rr = 54
tran_num_ll = 54

dist_cutoff = 4.26
dist_cutoff_mode = one_dim

! SYSTEM
begin unit_cell_cart
Ang
       28.620869129221902       0.000000000000000       0.000000000000000
        0.000000000000000      19.999999943129701       0.000000000000000
        0.000000000000000       0.000000000000000      37.350000000000001
end unit_cell_cart

! KPOINTS
mp_grid : 1 1 1
gamma_only = .true.

begin kpoints
0.0000  0.0000  0.0000
end kpoints

begin atoms_frac
   H   0.7916897963503170   0.5000000000000000   0.0833335855333369
   H   0.7913155200514430   0.5000000000000000   0.0183656282099692
   H   0.7791431992206470   0.5000000000000000   0.5645279115988290
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   H   0.7829463627080721   0.5000000000000000   0.4234103020578370
   H   0.7782859350387951   0.5000000000000000   0.2458710458605870
   H   0.2130143618650380   0.5000000000000000   0.3588307318330350
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   H   0.2106135864276420   0.5000000000000000   0.9721493596861091
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   C   0.5000000000000000   0.5000000000000000   0.1827134961476530
   C   0.5000000000000000   0.5000000000000000   0.8432939878727941
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   C   0.5000000000000000   0.5000000000000000   0.9184361529840311
   C   0.5000000000000000   0.5000000000000000   0.9560146872746120
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   N   0.7105222874689660   0.5000000000000000   0.7470847996242400
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   N  -0.6685000360612061  -0.4999999999999999   0.5837210067491560
   N  -0.6669424290904131  -0.4999999999999999   0.4759064451312000
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   N  -0.6268984443976631  -0.4999999999999999   0.5302549077099270
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   N  -0.7506160617192741  -0.4999999999999999   0.5810730858375940
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   N  -0.5410829445468122  -0.4999999999999999   0.7451736690129650
   N  -0.7105222874689661  -0.4999999999999999   0.7470847996242400
   N  -0.6258415990618181  -0.4999999999999999   0.7448887734938301
   N  -0.5416603132741310  -0.4999999999999999   0.6370678020450260
   N  -0.6719078862969961  -0.4999999999999999   0.6911738849932390
   N  -0.7149751632917251  -0.4999999999999999   0.6398252614198570
   N  -0.5829958215370811  -0.4999999999999999   0.6902703457683180
   N  -0.7552137767770522  -0.4999999999999999   0.6951725191819970
   N   0.5000000000000000   0.5000000000000000   0.5823584575610350
   N   0.5000000000000000   0.5000000000000000   0.3671738149164150
   N   0.5000000000000000   0.5000000000000000   0.2591481079130980
   N   0.5000000000000000   0.5000000000000000   0.6910399392616872
end atoms_frac

begin projections
random
end projections



---
Haichang Lu
Department of Engineering , University of Cambridge

Centre for Advanced Photonics and Electronics,9 JJ Thomson Ave, 
Cambridge
CB3 0FA, United Kingdom

St. Edmund's college
Tel: +44(0) 7778 392573

On 2017-05-16 10:11, Haichang Lu wrote:
> Dear All,
> I am conducting lcr transport calculation while I found a message in
> the end of my unfinished calculation.
> Reading CNNRAC_LCR.unkg  file
> 
>  Sorting WFs into principal layers
> 
>  Inconsistent number of groups among principal layers: restarting 
> sorting...
> 
>  Sorting WFs into principal layers
> 
>  Exiting.......
>  Sorting techniques exhausted: Inconsistent number of groups among
> principal layers
> 
> I set number of unit cell in side the principle layers into 1 and
> number of wannier functions inside the principle layer into 54, which
> is the number of wannier function of a unit cell of lead.
> 
> I only put one unit cell in the left and right lead.
> 
> However, when I calculate your tutorial of example 15 of defect CNT, I
> found lcr need 4 Principle layers, with 2 at each end.
> 
> I wonder if only 1 unit cell at each lead is enough? Or more for buffer 
> region.
> 
> And can anyone explain what is sorted index and unsorted index in
> principle layer sorting procedure?



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