Re: [Wien] wien2k with conventional cell?

2013-10-29 Thread Gang Li
Dear all, As a follow-up question, taking GaAs as an example, if I actually want to work with an unit cell with the following lattice vectors: a1 = a*( 0.5, 0.5, 0.0), a2 = a*(-0.5, 0.5, 0.0), a3 = a*( 0.0, 0.5, 0.5), which contains only one Ga and one As atoms in each unit

Re: [Wien] wien2k with conventional cell?

2013-10-29 Thread Peter Blaha
In WIEN2k you cannot input a bravais matrix directly. If you really need to do this in such a cell (why at all ) , you have to use a P cell and give a,b,c (a/sqrt(2)) and alpha,beta,gamma (as angles between your basis vectors). In addition you have to transform the positions of As into

Re: [Wien] wien2k with conventional cell?

2013-10-29 Thread Gang Li
Dear Prof. Blaha Thank you for your reply. This is actually a 'have-to' in my case, as these unit cell vectors are convenient for me to construct a slab (from the maximal localized wannier function) with surface at z-direction. I have tried with primitive cell in wien2k and rotated the basis

Re: [Wien] wien2k with conventional cell?

2013-10-29 Thread Peter Blaha
Change the angles slightly during init_lapw and change them back afterwards. The initialization will then be done without symmetry. On 10/29/2013 10:18 AM, Gang Li wrote: Dear Prof. Blaha Thank you for your reply. This is actually a 'have-to' in my case, as these unit cell vectors are

Re: [Wien] wien2k with conventional cell?

2013-10-29 Thread Gang Li
Dear Prof. Blaha Thank you again for the kind help. I will try this out and get back to you. best, Gang On Tue, Oct 29, 2013 at 10:26 AM, Peter Blaha pbl...@theochem.tuwien.ac.atwrote: Change the angles slightly during init_lapw and change them back afterwards. The initialization will

[Wien] wien2k with conventional cell?

2013-10-28 Thread Gang Li
Dear wien2k experts: I am wondering if it is possible for wien2k to run with conventional cell instead of primitive cell? If it is, could anyone figure out to me how this is realized in practice. thanks, Gang ___ Wien mailing list

Re: [Wien] wien2k with conventional cell?

2013-10-28 Thread Oleg Rubel
Hello, here is an example of structure file for GaAs. It has a zinc-blende structure with 2-atom primitive cell or 8-atom conventional cell. The key is to label atoms (Ga1, Ga2, etc.) in order to avoid their recognition as equivalent spices. Please note that such a structure will have lower

Re: [Wien] wien2k with conventional cell?

2013-10-28 Thread Gang Li
Dear Oleg Thank you so much. This is exactly what I want to know. Once a time, I thought to have wien2k to skip the symmetry analysis, however, I encountered some other problem originated from doing so. Your suggestion is much better. thanks, Gang On 28 Oct 2013, at 22:22, Oleg Rubel