[Pw_forum] the problem about eigndisplacement of phonon?

[针叶 朱]

Dear stefano:
  Thank you very much. i still am confused with the equations you give. i have three questions:
  (1) \Phi U = M \omega^2 U
   in this equation, what is the meaning of \Phi ?
  (2) in fact,  what is printed in the matdyn is eigndisplacement. when i want eignvector, is M selected to be 207.2 amu. how to renormalize the eignvector?
  please give me suggestions!
   
   
  Regards
   
   
                               zhuzhenye
   

		
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