The ABINIT Users Mailing List ( CLOSED )

[Martin Tijssens <m.g.a.tijssens@lr.tudelft.nl>]

Dear user,

any eigendisplacement vector multiplied with any constant is still an 
eigendisplacement vector, i.e. if A.x = \lambda .x, then A.(c x) = c 
(A.x) = c (\lambda x) = \lambda (c x). The units of an eigendisplacement 
vector are therefore irrelevant.
Some time ago I searched for how Anaddb exports the eigendisplacements 
and I remember that they are normalized first and then divided by atomic 
mass.

Best wishes,
Martin Tijssens

ilyes.hamdi@fst.rnu.tn wrote:

> Dear abinit users
> I have a question about the unit of the eigendisplacement given by anaddb:
> if they are given in bohr or acell unit. I'am using 4.3.2 version of the 
> project and i failed to find this unit in the source.
> thank you very much
>
>
>
>  


--
Dr. M.G.A. Tijssens
Faculty of Aerospace Engineering
P.O.Box 5058
2600 GB  Delft
The Netherlands
Tel: +31 15 278 9552
Fax: +31 15 261 1465
Web: http://www.em.lr.tudelft.nl