[Wien] error in supercell construction for constrained DFT calculation

wasim raja Mondal wasimr.mondal at gmail.com
Mon Jul 15 11:27:29 CEST 2013


Dear Martin
           Thanks for your reply. I have tried this shift with 0 and 2 both
but I am getting same error in both cases. First time I am doing this.
Please give some suggestion.

Regards
wasim


On Mon, Jul 15, 2013 at 2:52 PM, pieper <pieper at ifp.tuwien.ac.at> wrote:

> Dear Wasim,
>
> I am far from being an expert, but when you call supercell you shift all
> atoms a full 2 unit cells in (111) direction. Why? I never tried but maybe
> nn has difficulties with that.
>
> Best regards,
>
> Martin Pieper
>
>
>
> Am 15.07.2013 08:55, schrieb wasim raja Mondal:
>
>> Dear wien2k experts
>>
>> I am doing constrained DFT calculation of NiO following discussion by
>> laurence marks in the wien2k mailing list. The following steps I have
>> done:
>>
>> (1) I have created usual NiO.struct file using crystal editor which is
>> following:
>>
>>        NiO
>> F   LATTICE,NONEQUIV.ATOMS:  2225_Fm-3m
>> MODE OF CALC=RELA unit=bohr
>>   7.927000  7.927000  7.927000 90.000000 90.000000 90.000000
>> ATOM  -1: X=0.00000000 Y=0.00000000 Z=0.00000000
>>           MULT= 1          ISPLIT= 8
>> Ni1        NPT=  781  R0=0.00005000 RMT=    2.3000   Z: 28.0
>> LOCAL ROT MATRIX:    1.0000000 0.0000000 0.0000000
>>                      0.0000000 1.0000000 0.0000000
>>                      0.0000000 0.0000000 1.0000000
>> ATOM   2: X=0.50000000 Y=0.50000000 Z=0.50000000
>>           MULT= 1          ISPLIT= 8
>> O 2        NPT=  781  R0=0.00010000 RMT=    1.6500   Z:  8.0
>> LOCAL ROT MATRIX:    0.0000000 0.0000000 0.0000000
>>                      0.0000000 0.0000000 0.0000000
>>                      0.0000000 0.0000000 0.0000000
>>    0      NUMBER OF SYMMETRY OPERATIONS
>>
>> (2) Next I have generated supercell program and getting following errors:
>>
>>  Program generates supercell from a WIEN struct file.
>>
>>  Filename of struct file:
>> NiO.struct
>>
>>  Number of cells in x direction:
>> 2
>>  Number of cells in y direction:
>> 2
>>  Number of cells in z direction:
>> 2
>>  Optional shift all atoms by the same amount (fractional coordinates).
>>  Please enter x shift:
>> 2
>>  Please enter y shift:
>> 2
>>  Please enter z shift:
>> 2
>>
>>  Current structure has lattice type F
>>  Enter your target lattice type: (P,B,F)
>> F
>>  Target lattice type will be F
>>
>>  Supercell generated sucessfully.
>>  Stored in struct file: NiO_super.struct              **
>>
>>
>>  You may need to replace an atom by an impurity or distort the positions,
>> ....
>> raja at viper5:~/BaRuO3_wien2k/**constr_DFT/NiO$ ls
>> fort.21  :log  NiO.struct  NiO.struct_ii  NiO_super.struct  nn.def
>> setrmt.bva  setrmt.nnshells  setrmt.outputnn  setrmt.struct
>> setrmt.struct_nn  setrmt.struct_setrmt
>> raja at viper5:~/BaRuO3_wien2k/**constr_DFT/NiO$ vi NiO.struct
>> raja at viper5:~/BaRuO3_wien2k/**constr_DFT/NiO$ init_lapw
>> next is setrmt
>> Automatic determination of RMTs. Please specify the desired RMT reduction
>> compared to almost touching spheres.
>> Typically, for a single calculation just hit enter, for force minimization
>> use 1-5; for volume effects you may need even larger reductions.
>>
>> Enter reduction in %
>> 0
>> Use old or new scheme (o/N)
>> N
>>  specify nn-bondlength factor: (usually=2) [and optionally dlimit, dstmax
>> (about
>>   1.d-5, 20)]
>>  DSTMAX:   20.0000000000000
>>  iix,iiy,iiz           5           5           5   39.6350000000000
>>    39.6350000000000        39.6350000000000
>>  NAMED ATOM: Ni1       Z changed to IATNR+999 to determine equivalency
>> forrtl: severe (24): end-of-file during read, unit 20, file
>> /home/raja/BaRuO3_wien2k/**constr_DFT/NiO/NiO.struct
>> Image              PC                Routine            Line
>> Source
>> nn                 00000000004955EE  Unknown               Unknown
>> Unknown
>> nn                 0000000000494086  Unknown               Unknown
>> Unknown
>> nn                 000000000044B462  Unknown               Unknown
>> Unknown
>> nn                 000000000040F1BC  Unknown               Unknown
>> Unknown
>> nn                 000000000040E6DC  Unknown               Unknown
>> Unknown
>> nn                 000000000042F7B5  Unknown               Unknown
>> Unknown
>> nn                 000000000042D648  Unknown               Unknown
>> Unknown
>> nn                 000000000040597A  MAIN__                    218  nn.f
>> nn                 000000000040349C  Unknown               Unknown
>> Unknown
>> libc.so.6          00002B233B4AA76D  Unknown               Unknown
>> Unknown
>> nn                 0000000000403399  Unknown               Unknown
>> Unknown
>> 0.0u 0.0s 0:00.00 0.0% 0+0k 0+16io 0pf+0w
>> error: command   /home/raja/wien2k_**installation/nn nn.def   failed
>> atom  Z   RMT-max   RMT
>> Do you want to accept these radii; discard them; or rerun setRmt (a/d/r):
>> a
>>    nn    (17:45:12)  specify nn-bondlength factor: (usually=2) [and
>> optionally dlimit, dstmax (about
>>   1.d-5, 20)]
>> 2
>>  DSTMAX:   20.0000000000000
>>  iix,iiy,iiz           5           5           5   39.6350000000000
>>    39.6350000000000        39.6350000000000
>>  NAMED ATOM: Ni1       Z changed to IATNR+999 to determine equivalency
>> forrtl: severe (24): end-of-file during read, unit 20, file
>> /home/raja/BaRuO3_wien2k/**constr_DFT/NiO/NiO.struct
>> Image              PC                Routine            Line
>> Source
>> nn                 00000000004955EE  Unknown               Unknown
>> Unknown
>> nn                 0000000000494086  Unknown               Unknown
>> Unknown
>> nn                 000000000044B462  Unknown               Unknown
>> Unknown
>> nn                 000000000040F1BC  Unknown               Unknown
>> Unknown
>> nn                 000000000040E6DC  Unknown               Unknown
>> Unknown
>> nn                 000000000042F7B5  Unknown               Unknown
>> Unknown
>> nn                 000000000042D648  Unknown               Unknown
>> Unknown
>> nn                 000000000040597A  MAIN__                    218  nn.f
>> nn                 000000000040349C  Unknown               Unknown
>> Unknown
>> libc.so.6          00002B8A5151076D  Unknown               Unknown
>> Unknown
>> nn                 0000000000403399  Unknown               Unknown
>> Unknown
>> 0.0u 0.0s 0:04.47 0.0% 0+0k 0+0io 0pf+0w
>> error: command   /home/raja/wien2k_**installation/nn nn.def   failed
>>
>>    stop error
>>
>> Regards
>> wasim
>>
>>
>>
>>
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