[Pw_forum] the problem about eigndisplacement of phonon?
degironc at sissa.it
Tue Jun 6 23:44:21 CEST 2006
针叶 朱 wrote:
> 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 ?
before answering this question I would like to ear your guess first.
> (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
> please give me suggestions!
Suppose you write your how code and want normalize a vector ... what
would you do ?
I think I missed your third question...
More information about the users