Re: [SIESTA-L] How to explain *.FC file?phonon frequence is the same with vibration frequence when the system is molecule?

2010-03-02 Por tôpico Miguel Eduardo Cifuentes Quintal
-- Mensage Original De: Fen Hong Para: Miguel Eduardo Cifuentes Quintal Asunto: Re: [SIESTA-L] How to explain *.FC file?phonon frequence is the same with vibration frequence when the system is molecule? Fecha: 01/03/10 22:02 > > Dear Eduardo,Thank you very much, I can understand the Sï

Re: [SIESTA-L] How to explain *.FC file?phonon frequence is the same with vibration frequence when the system is molecule?

2010-03-01 Por tôpico Miguel Eduardo Cifuentes Quintal
-Mérida, México. e-mail: mcifuen...@mda.cinvestav.mx - Mensage Original De: siesta-l@uam.es Para: siesta-l@uam.es Asunto: [SIESTA-L] How to explain *.FC file?phonon frequence is the same with vibration frequence when the system is

[SIESTA-L] How to explain *.FC file?phonon frequence is the same with vibration frequence when the system is molecule?

2010-02-28 Por tôpico Fen Hong
Dear all, I am trying to get the force constant matrix of water molecule, But I cannot understand the output *.FC file well even I read the answer on the siesta-L. I think there should be 3N*3N matrix in the *.FC file. actually, there is only 54 coordination. As the siesta-L answered before, there