Re: [Pw_forum] calculation of absorption spectrum

2016-09-17 Thread Muhammad Adnan Saqlain
Dear Federico Thanks for your detailed response. I would look meet prof. Seymour Cahangirov. I actually, have recently joined Bilkent, so do no know many people yet. On 09/17/2016 04:41 PM, Federico Iori wrote: Hi. In my opinion, I think the approach you chose depends strictly from the qu

[Pw_forum] 18th International Workshop on Computational Physics and Materials Science: Total Energy and Force Methods - ICTP, Trieste, Italy (12-14 January 2017)

2016-09-17 Thread peressi
Dear All, the 18th International Workshop on Computational Physics and Materials Science: Total Energy and Force Methods will be held at ICTP, Trieste, Italy (12-14 January 2017). Following the tradition of the previous meetings, it will be devoted to recent advances in computational condensed ma

Re: [Pw_forum] wannier90.x executable

2016-09-17 Thread Nicola Marzari
Thanks Stefano! One mini-comment - it's www.wannier.org . nicola On 16/09/2016 08:25, stefano de gironcoli wrote: > dear Kapildeb Dolui, > >wannier90.x is a separate software that is interfaced with QE, among > other codes. >check www.wannier90.org for more inf

Re: [Pw_forum] calculation of absorption spectrum

2016-09-17 Thread Federico Iori
Hi. In my opinion, I think the approach you chose depends strictly from the question you want to answer and after that from the the size (number electrons, Number plane wave thou) you have. Do you need a full excitonic optical spectrum ? or just a RPA spectrum is sufficient for your study?

[Pw_forum] calculation of absorption spectrum

2016-09-17 Thread Muhammad Adnan Saqlain
Dear users I have a system consisting of 94 atoms (periodic with cell lengths of 16.5, 8.5 and 8.7). I want to calculate its absorption spectrum. Can anyone guide me which technique would be easy to run. Actually, we have 16 core machine and we can run a job for a maximum of 15 days only. Base

[Pw_forum] 2D E(Kx,ky) data and contour plots using plot_2d

2016-09-17 Thread Tapas Dutta
I am trying to extract two-dimensional energy contour data (kx, ky, E) for 2D materials. For this, in the 'bands' calculation file, I am setting the 3 coordinates of the rectangle in terms of tpiba_c (in units of 2pi/a)*. * And then using plot_2d in the bands.in file, I obtain the nicely tabulated