Re: [Wien] Reg: Supercell calculation

2013-11-13 Thread pieper
Dear Swetha Gummula, The physical properties of a material do not depend on wether or not you make use of symmetry properties when you calculate them. This is true also if you use Wien2k for your calculations - with the caveat that you should be careful to converge the scf to the same degree

Re: [Wien] Reg: Supercell calculation

2013-11-13 Thread Shwetha Gummula
Dear wien2k users and developers, Thank you Uday sir, Pieper sir for your reply. It is so helpful for me. Thanking you On Wed, Nov 13, 2013 at 3:35 PM, pieper pie...@ifp.tuwien.ac.at wrote: Dear Swetha Gummula, The physical properties of a material do not depend on wether or not you

[Wien] Reg: Supercell calculation

2013-11-12 Thread Shwetha Gummula
Dear wien2k users and developers, I am working on Heusler alloys, i am trying to create the supercell then dope with some element. I created 2x2x2 supercell, then it is lowering the symmetry and changing the space group (giving the lattice type P, B..). Is it possible to be

Re: [Wien] Reg: Supercell calculation

2013-11-12 Thread Uday
If I understood your question correctly then here is a suggestion. start with P, B or F according to it's symmetry and make each atom as inequivalent atoms. Suppose you have two Fe atoms in your supercell, present the two Fe as inequivalent atoms by writing Fe 1, Fe 2. In that case it can not

[Wien] reg: supercell calculation

2013-02-21 Thread Swetarekha Ram
Dear users, I am doing the super-cell calculation for the first time. Is it possible to create the super-cell of having the same space group as the parent structure. Suppose, I have the crystal structure of tetragonal symmetry. When I am creating the super-cell of 2*1*1 or 2*2*1, it is

[Wien] reg: supercell calculation

2013-02-21 Thread Rocquefelte
The space group depends on the cell. If you change the cell, you will change the space group (except if the symmetry is very low). In your case, I imagine that you can keep the tetragonal symmetry if you create an adequate supercell (keeping the 4-fold axis symmetry), but the space group will