[Wien] [SPAM?] Re: [SPAM?] Re: Regarding supercell

Riyajul Islam riyajul80 at gmail.com
Thu Jul 12 15:09:23 CEST 2018


On 12 July 2018 at 18:36, Riyajul Islam <riyajul80 at gmail.com> wrote:
> These are the structure files. I'm still having the same problem in symmetry.
>
> On 12 July 2018 at 07:01, Gavin Abo <gsabo at crimson.ua.edu> wrote:
>> The FAQ page [
>> http://susi.theochem.tuwien.ac.at/reg_user/faq/supercells.html ] says you
>> can also use special labels.
>>
>> Probably, if you set all equivalent atoms as nonequivalent atoms in
>> StructGen using the special labels it will keep the 2x2x2 supercell that you
>> see in XCrySDen.  However, more nonequivalent atoms should increase
>> computation time.  So you may want to use less special labels if possible to
>> reduce the cells as much as possible during initialization (with the help of
>> x nn, x sgroup, and x symmetry).
>>
>> On 7/11/2018 7:35 AM, Riyajul Islam wrote:
>>
>> At first I made a supercell of MnFe2O4 and then I replaced Mn with Ca and
>> changed Z.
>>
>> On Wed, 11 Jul 2018, 7:03 pm Laurence Marks, <L-marks at northwestern.edu>
>> wrote:
>>>
>>> As the supercell program tells you when you run it, you have to displace
>>> an atom or change it's name to prevent the cell being reduced back.
>>>
>>> On Wed, Jul 11, 2018 at 8:21 AM, Riyajul Islam <riyajul80 at gmail.com>
>>> wrote:
>>>>
>>>> Dear Wien2k users,
>>>> I want create a 2x2x2 supercell of an orthorombic structure.
>>>> Aftercreating the supercell I copied case_super.struct to case.struct
>>>> the ran x nn wich gave me another structure and copied it to the
>>>> case.struct file. But when I ran x sgroup it gave me a spacegroup
>>>> 51_Pmma. If I accept the structure created by x sgroup the supercell
>>>> reduces to 1x1x1, but if I don't accept it then I get an error in x
>>>> symmetry
>>>>
>>>> GLSYM: THE CRYSTAL SYSTEM IS CUBIC
>>>>  PGLSYM: ORDER OF LATTICE POINT GROUP (NO BASE) =            48
>>>>  PGBSYM: ORDER OF LATTICE SPACE GROUP (WITH BASE) =           8
>>>>  PGBSYM: NON-SYMMORPHIC SPACE GROUP OR NON-STANDARD ORIGIN OF COORDINATES
>>>>  PGBSYM: SPACE GROUP CONTAINS INVERSION
>>>>  SPACE GROUP CONTAINS INVERSION
>>>>         BUT ATOMS SHOULD BE SHIFTED BY  -0.25000000  -0.25000000
>>>> -0.25000000
>>>>         BUT ATOMS SHOULD BE SHIFTED BY  -0.25000000  -0.25000000
>>>> -0.25000000
>>>> number of atoms:  448
>>>>
>>>>  ATOM:          -1
>>>> Ca1        operation #  1     1
>>>> Ca1        operation #  5     2 || z
>>>> Ca1        operation # 12     m n 110
>>>> Ca1        operation # 13     m n -110
>>>>   pointgroup is mm2 (neg. iatnr!!)
>>>>   axes should be: 2 || z, m n y
>>>>   z-rotation vector:  0.0000  0.0000  1.0000
>>>>   y-rotation vector:  1.0000  1.0000  0.0000    2
>>>>   WARNING: LOCAL ROTATION MATRIX CHANGED
>>>> LOCAL ROT MATRIX:       NEW                                OLD
>>>>            0.7071068 0.7071068 0.0000000      1.0000000 0.0000000
>>>> 0.0000000
>>>>           -0.7071068 0.7071068 0.0000000      0.0000000 1.0000000
>>>> 0.0000000
>>>>            0.0000000 0.0000000 1.0000000      0.0000000 0.0000000
>>>> 1.0000000
>>>> lm: 0 0  1 0  2 0  2 2  3 0  3 2  4 0  4 2  4 4  5 0  5 2  5 4  6 0  6
>>>> 2  6 4  6 6
>>>>  ==============================================
>>>>  ---------- ERROR ------------------
>>>>  ERROR: (multiplicity of atom           1 )*(number of
>>>> pointgroup-operations)
>>>>  ERROR: is NOT = (number of spacegroup-operations)
>>>>  ERROR: MULT:           8  ISYM:           4  NSYM           8
>>>>  ERROR: Check your struct file with    x sgroup
>>>>  ---------- ERROR ------------------
>>>>
>>>>  ATOM:          -2
>>>> Mn2        operation #  1     1
>>>> Mn2        operation #  5     2 || z
>>>> Mn2        operation # 12     m n 110
>>>> Mn2        operation # 13     m n -110
>>>>   pointgroup is mm2 (neg. iatnr!!)
>>>>   axes should be: 2 || z, m n y
>>>>   z-rotation vector:  0.0000  0.0000  1.0000
>>>>   y-rotation vector:  1.0000  1.0000  0.0000    2
>>>>   WARNING: LOCAL ROTATION MATRIX CHANGED
>>>> LOCAL ROT MATRIX:       NEW                                OLD
>>>>            0.7071068 0.7071068 0.0000000      1.0000000 0.0000000
>>>> 0.0000000
>>>>           -0.7071068 0.7071068 0.0000000      0.0000000 1.0000000
>>>> 0.0000000
>>>>            0.0000000 0.0000000 1.0000000      0.0000000 0.0000000
>>>> 1.0000000
>>>> lm: 0 0  1 0  2 0  2 2  3 0  3 2  4 0  4 2  4 4  5 0  5 2  5 4  6 0  6
>>>> 2  6 4  6 6
>>>>  ==============================================
>>>>  ---------- ERROR ------------------
>>>>  ERROR: (multiplicity of atom           2 )*(number of
>>>> pointgroup-operations)
>>>>  ERROR: is NOT = (number of spacegroup-operations)
>>>>  ERROR: MULT:           8  ISYM:           4  NSYM           8
>>>>  ERROR: Check your struct file with    x sgroup
>>>>  ---------- ERROR ------------------
>>>>
>>>>  ATOM:          -3
>>>> Fe3        operation #  1     1
>>>> Fe3        operation #  2     -1
>>>> Fe3        operation # 13     m n -110
>>>> Fe3        operation # 19     2 || -110
>>>>   pointgroup is 2/m (neg. iatnr!!)
>>>>   axes should be: 2 || z, m n z
>>>>   z-rotation vector: -1.0000  1.0000  0.0000
>>>>   y-rotation vector:  0.7071 -0.7071  0.0000    0
>>>>   WARNING: LOCAL ROTATION MATRIX CHANGED
>>>> LOCAL ROT MATRIX:       NEW                                OLD
>>>>            0.0000000-0.7071068-0.7071068      1.0000000 0.0000000
>>>> 0.0000000
>>>>            0.0000000-0.7071068 0.7071068      0.0000000 1.0000000
>>>> 0.0000000
>>>>           -1.0000000 0.0000000 0.0000000      0.0000000 0.0000000
>>>> 1.0000000
>>>> lm: 0 0  2 0  2 2 -2 2  4 0  4 2 -4 2  4 4 -4 4  6 0  6 2 -6 2  6 4 -6
>>>> 4  6 6 -6 6
>>>>  ==============================================
>>>>  ---------- ERROR ------------------
>>>>  ERROR: (multiplicity of atom           3 )*(number of
>>>> pointgroup-operations)
>>>>  ERROR: is NOT = (number of spacegroup-operations)
>>>>  ERROR: MULT:           8  ISYM:           4  NSYM           8
>>>>  ERROR: Check your struct file with    x sgroup
>>>>  ---------- ERROR ------------------
>>>>
>>>>  ATOM:          -4
>>>> Fe4        operation #  1     1
>>>> Fe4        operation # 12     m n 110
>>>>   pointgroup is m (neg. iatnr!!)
>>>>   axes should be: m n z
>>>>   z-rotation vector:  1.0000  1.0000  0.0000
>>>>   y-rotation vector:  0.0000  0.0000 -1.0000    0
>>>>   WARNING: LOCAL ROTATION MATRIX CHANGED
>>>> LOCAL ROT MATRIX:       NEW                                OLD
>>>>            0.0000000 0.7071068 0.7071068      1.0000000 0.0000000
>>>> 0.0000000
>>>>            0.0000000-0.7071068 0.7071068      0.0000000 1.0000000
>>>> 0.0000000
>>>>            1.0000000 0.0000000 0.0000000      0.0000000 0.0000000
>>>> 1.0000000
>>>> lm: 0 0  1 1 -1 1  2 0  2 2 -2 2  3 1 -3 1  3 3 -3 3  4 0  4 2 -4 2  4
>>>> 4 -4 4  5 1 -5 1  5 3 -5 3  5 5 -5 5  6 0  6 2 -6 2  6 4 -6 4  6 6 -6
>>>> 6
>>>>  ==============================================
>>>>  ---------- ERROR ------------------
>>>>  ERROR: (multiplicity of atom           4 )*(number of
>>>> pointgroup-operations)
>>>>  ERROR: is NOT = (number of spacegroup-operations)
>>>>  ERROR: MULT:          16  ISYM:           2  NSYM           8
>>>>  ERROR: Check your struct file with    x sgroup
>>>>  ---------- ERROR ------------------
>>>>
>>>>  ATOM:          -5
>>>> Fe5        operation #  1     1
>>>> Fe5        operation #  2     -1
>>>> Fe5        operation # 13     m n -110
>>>> Fe5        operation # 19     2 || -110
>>>>   pointgroup is 2/m (neg. iatnr!!)
>>>>   axes should be: 2 || z, m n z
>>>>   z-rotation vector: -1.0000  1.0000  0.0000
>>>>   y-rotation vector:  0.0000  0.0000  1.0000    0
>>>>   WARNING: LOCAL ROTATION MATRIX CHANGED
>>>> LOCAL ROT MATRIX:       NEW                                OLD
>>>>            0.0000000-0.7071068-0.7071068      1.0000000 0.0000000
>>>> 0.0000000
>>>>            0.0000000-0.7071068 0.7071068      0.0000000 1.0000000
>>>> 0.0000000
>>>>           -1.0000000 0.0000000 0.0000000      0.0000000 0.0000000
>>>> 1.0000000
>>>> lm: 0 0  2 0  2 2 -2 2  4 0  4 2 -4 2  4 4 -4 4  6 0  6 2 -6 2  6 4 -6
>>>> 4  6 6 -6 6
>>>>  ==============================================
>>>>  ---------- ERROR ------------------
>>>>  ERROR: (multiplicity of atom           5 )*(number of
>>>> pointgroup-operations)
>>>>  ERROR: is NOT = (number of spacegroup-operations)
>>>>  ERROR: MULT:           8  ISYM:           4  NSYM           8
>>>>  ERROR: Check your struct file with    x sgroup
>>>>  ---------- ERROR ------------------
>>>>
>>>>  ATOM:          -6
>>>> O 6        operation #  1     1
>>>> O 6        operation # 13     m n -110
>>>>   pointgroup is m (neg. iatnr!!)
>>>>   axes should be: m n z
>>>>   z-rotation vector: -1.0000  1.0000  0.0000
>>>>   y-rotation vector:  0.0000  0.0000 -1.0000    0
>>>>   WARNING: LOCAL ROTATION MATRIX CHANGED
>>>> LOCAL ROT MATRIX:       NEW                                OLD
>>>>            0.0000000-0.7071068-0.7071068      1.0000000 0.0000000
>>>> 0.0000000
>>>>            0.0000000-0.7071068 0.7071068      0.0000000 1.0000000
>>>> 0.0000000
>>>>           -1.0000000 0.0000000 0.0000000      0.0000000 0.0000000
>>>> 1.0000000
>>>> lm: 0 0  1 1 -1 1  2 0  2 2 -2 2  3 1 -3 1  3 3 -3 3  4 0  4 2 -4 2  4
>>>> 4 -4 4  5 1 -5 1  5 3 -5 3  5 5 -5 5  6 0  6 2 -6 2  6 4 -6 4  6 6 -6
>>>> 6
>>>>  ==============================================
>>>>  ---------- ERROR ------------------
>>>>  ERROR: (multiplicity of atom           6 )*(number of
>>>> pointgroup-operations)
>>>>  ERROR: is NOT = (number of spacegroup-operations)
>>>>  ERROR: MULT:          16  ISYM:           2  NSYM           8
>>>>  ERROR: Check your struct file with    x sgroup
>>>>  ---------- ERROR ------------------
>>>>
>>>>  ATOM:          -7
>>>> O 7        operation #  1     1
>>>> O 7        operation # 12     m n 110
>>>>   pointgroup is m (neg. iatnr!!)
>>>>   axes should be: m n z
>>>>   z-rotation vector:  1.0000  1.0000  0.0000
>>>>   y-rotation vector:  0.0000  0.0000 -1.0000    0
>>>>   WARNING: LOCAL ROTATION MATRIX CHANGED
>>>> LOCAL ROT MATRIX:       NEW                                OLD
>>>>            0.0000000 0.7071068 0.7071068      1.0000000 0.0000000
>>>> 0.0000000
>>>>            0.0000000-0.7071068 0.7071068      0.0000000 1.0000000
>>>> 0.0000000
>>>>            1.0000000 0.0000000 0.0000000      0.0000000 0.0000000
>>>> 1.0000000
>>>> lm: 0 0  1 1 -1 1  2 0  2 2 -2 2  3 1 -3 1  3 3 -3 3  4 0  4 2 -4 2  4
>>>> 4 -4 4  5 1 -5 1  5 3 -5 3  5 5 -5 5  6 0  6 2 -6 2  6 4 -6 4  6 6 -6
>>>> 6
>>>>  ==============================================
>>>>  ---------- ERROR ------------------
>>>>  ERROR: (multiplicity of atom           7 )*(number of
>>>> pointgroup-operations)
>>>>  ERROR: is NOT = (number of spacegroup-operations)
>>>>  ERROR: MULT:          16  ISYM:           2  NSYM           8
>>>>  ERROR: Check your struct file with    x sgroup
>>>>  ---------- ERROR ------------------
>>>>
>>>>  ATOM:          -8
>>>> O 8        operation #  1     1
>>>> O 8        operation # 12     m n 110
>>>>   pointgroup is m (neg. iatnr!!)
>>>>   axes should be: m n z
>>>>   z-rotation vector:  1.0000  1.0000  0.0000
>>>>   y-rotation vector:  0.0000  0.0000  1.0000    0
>>>>   WARNING: LOCAL ROTATION MATRIX CHANGED
>>>> LOCAL ROT MATRIX:       NEW                                OLD
>>>>            0.0000000 0.7071068 0.7071068      1.0000000 0.0000000
>>>> 0.0000000
>>>>            0.0000000-0.7071068 0.7071068      0.0000000 1.0000000
>>>> 0.0000000
>>>>            1.0000000 0.0000000 0.0000000      0.0000000 0.0000000
>>>> 1.0000000
>>>> lm: 0 0  1 1 -1 1  2 0  2 2 -2 2  3 1 -3 1  3 3 -3 3  4 0  4 2 -4 2  4
>>>> 4 -4 4  5 1 -5 1  5 3 -5 3  5 5 -5 5  6 0  6 2 -6 2  6 4 -6 4  6 6 -6
>>>> 6
>>>>  ==============================================
>>>>  ---------- ERROR ------------------
>>>>  ERROR: (multiplicity of atom           8 )*(number of
>>>> pointgroup-operations)
>>>>  ERROR: is NOT = (number of spacegroup-operations)
>>>>  ERROR: MULT:          16  ISYM:           2  NSYM           8
>>>>  ERROR: Check your struct file with    x sgroup
>>>>  ---------- ERROR ------------------
>>>>
>>>>  ATOM:          -9
>>>> O 9        operation #  1     1
>>>> O 9        operation # 13     m n -110
>>>>   pointgroup is m (neg. iatnr!!)
>>>>   axes should be: m n z
>>>>   z-rotation vector: -1.0000  1.0000  0.0000
>>>>   y-rotation vector:  0.0000  0.0000  1.0000    0
>>>>   WARNING: LOCAL ROTATION MATRIX CHANGED
>>>> LOCAL ROT MATRIX:       NEW                                OLD
>>>>            0.0000000-0.7071068-0.7071068      1.0000000 0.0000000
>>>> 0.0000000
>>>>            0.0000000-0.7071068 0.7071068      0.0000000 1.0000000
>>>> 0.0000000
>>>>           -1.0000000 0.0000000 0.0000000      0.0000000 0.0000000
>>>> 1.0000000
>>>> lm: 0 0  1 1 -1 1  2 0  2 2 -2 2  3 1 -3 1  3 3 -3 3  4 0  4 2 -4 2  4
>>>> 4 -4 4  5 1 -5 1  5 3 -5 3  5 5 -5 5  6 0  6 2 -6 2  6 4 -6 4  6 6 -6
>>>> 6
>>>>  ==============================================
>>>>  ---------- ERROR ------------------
>>>>  ERROR: (multiplicity of atom           9 )*(number of
>>>> pointgroup-operations)
>>>>  ERROR: is NOT = (number of spacegroup-operations)
>>>>  ERROR: MULT:          16  ISYM:           2  NSYM           8
>>>>  ERROR: Check your struct file with    x sgroup
>>>>  ---------- ERROR ------------------
>>>> 0.006u 0.003s 0:00.01 0.0% 0+0k 0+136io 0pf+0w
>>>>
>>>> Also I have worked on the same structure by creating 1x1x1 supercell
>>>> which ran quiet well. Kindly help me solve this problem
>>
>>
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