Re: [Pw_forum] Projected Band structure

2016-08-16 Thread Rolly Ng
Hi Riemann, You may try molecularpdos.x where you can project the selected atomic wave functions of the full system (corresponding to your graphene) onto the isolated graphene structure (without substrate). Rolly On 08/17/2016 02:05 PM, Riemann Derakhshan wrote: Dear QE Developer and users

[Pw_forum] Projected Band structure

2016-08-16 Thread Riemann Derakhshan
Dear QE Developer and users, I want to study the substrate effect on graphene, so I've put it on the hydrogenated substrate and calculate the band structure of the whole of the system. The whole of the system becomes Insulator. Now I want to know is it possible to extract just only the graphene

Re: [Pw_forum] Total energy of adsorbed molecule in a full system

2016-08-16 Thread Rolly Ng
Dear Prof. Paolo, I see and thanks for the tip J Regards, Rolly From: pw_forum-boun...@pwscf.org [mailto:pw_forum-boun...@pwscf.org] On Behalf Of Paolo Giannozzi Sent: Wednesday, August 17, 2016 1:54 PM To: PWSCF Forum Subject: Re: [Pw_forum] Total energy of adsorbed molecule in a ful

Re: [Pw_forum] Total energy of adsorbed molecule in a full system

2016-08-16 Thread Paolo Giannozzi
I don't think so. You just have to compute the energy of an isolated molecule with the geometry of the absorbed molecule. Paolo Il 17/ago/2016 07:45 AM, "Rolly Ng" ha scritto: > Dear Prof. Stefano, > > > > Thank you. So, is this a special feature of VASP? > > > > Regards, > > Rolly > > > > > > *

Re: [Pw_forum] Total energy of adsorbed molecule in a full system

2016-08-16 Thread Rolly Ng
Dear Prof. Stefano, Thank you. So, is this a special feature of VASP? Regards, Rolly From: pw_forum-boun...@pwscf.org [mailto:pw_forum-boun...@pwscf.org] On Behalf Of Stefano de Gironcoli Sent: Wednesday, August 17, 2016 12:14 PM To: PWSCF Forum Subject: Re: [Pw_forum] Total energ

Re: [Pw_forum] Total energy of adsorbed molecule in a full system

2016-08-16 Thread Stefano de Gironcoli
> On 17 Aug 2016, at 10:40, Rolly Ng wrote: > > Dear QE experts, > > I read about molecule deformation energy in the following article, I believe > it was computed with VASP. > > DFT studies of the bonding mechanism of 8-hydroxyquinoline and derivatives > on the (111) aluminum surface. > D

[Pw_forum] Total energy of adsorbed molecule in a full system

2016-08-16 Thread Rolly Ng
Dear QE experts, I read about molecule deformation energy in the following article, I believe it was computed with VASP. DFT studies of the bonding mechanism of 8-hydroxyquinoline and derivatives on the (111) aluminum surface. DOI:10.1039/C5CP03095A The molecule deformation energy was defi

Re: [Pw_forum] vc-relax total energy increases at the last step

2016-08-16 Thread Anand Chandra
Dear Amir, This question has been asked a couple of times I think. Kindly search the forum first. For example see link below. http://qe-forge.org/pipermail/pw_forum/2011-April/094661.html For such a large change in energy in the last step I am guessing first of all that your ecutwfc/ecutrho are

Re: [Pw_forum] vc-relax total energy increases at the last step

2016-08-16 Thread Robert Wexler
Dear Amir, Please read about Pulay stress. Google should provide ample reading on this topic. Best, Rob - Robert B. Wexler PhD Candidate in Chemistry University of Pennsylvania, 2018 rwex...@sas.upenn.edu (215) 801-8741

[Pw_forum] vc-relax total energy increases at the last step

2016-08-16 Thread Mofrad, Amir Mehdi (MU-Student)
Dear all, After doing vc-relax calculations I can see that the total energy decreases until the last step and it suddenly increases by an order of 5. For example the total energy at one step before last one is -945.15760751 and at the last step is -940.59081276. Does anyone know what the reaso

Re: [Pw_forum] Vanderbilt Type Pseudopotential

2016-08-16 Thread Mofrad, Amir Mehdi (MU-Student)
Thank you Dr. Marzari for your reply. I was following a paper on DFT study of pure silica zeolites and in that paper they mentioned they have used Vanderbilt-type Ultrasoft pseudopotential. That, I thought theses two terms are different. Best, Amir M. Mofrad