[Wien] Regarding supercell

Riyajul Islam riyajul80 at gmail.com
Wed Jul 11 15:21:00 CEST 2018


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

Thanking you,
Riyajul Islam


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