[Pw_forum] Questions about ph.x output

lan haiping lanhaiping at gmail.com
Tue Jun 6 14:37:02 CEST 2006


Dear developers:

       i try to understand the output of  ph.x , but failed.
     Would you please  help me out of these naive problems ?
1 , what are these numbers meaning?

 "phonons of Nanotube at Gamma
   1   32  8  8.0390000  4.0000000  4.0000000  0.0000000  0.0000000
0.0000000
            1  'C   '     10946.15867720511 "

2, why the dynamical matrix is 3 x 6 ?

     Dynamical  Matrix in cartesian axes

 q = (    0.000000000   0.000000000   0.000000000 )

  1  1
  1.23287517  0.00000000    0.00000000  0.00000000    0.02101913  0.00000000
  0.00000000  0.00000000    1.21209929  0.00000000    0.00000000  0.00000000
  0.02101913  0.00000000    0.00000000  0.00000000    0.33335967  0.00000000



Thank you in advance~

 Regards,



Hai-Ping
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