Re: [Pw_forum] "scf" calculation with "PBE0" hybrid functional

2016-08-06 Thread dario rocca
I will let the MD experts to reply to this question :) On Sat, Aug 6, 2016 at 2:49 AM, Narendranath Ghosh wrote: > Dear Dario > > Thank you very much for your valuable suggestion. As my systems are quite > large and require high computational resources , I decided to compare one > of my result w

Re: [Pw_forum] [Reg] Supercell relaxation is stopping without giving any error for larger super-cell on cluster.

2016-08-06 Thread Dae Kwang Jun
Dear Mahabul, It is possible that your computer lacks memory or processing power. Try repeating the calculation in a better computer or reduce the ecutwfc, ecutrho, or k points. Sincerely, Dae Kwang Jun On Thursday, 4 August 2016, Md Mahabul Islam wrote: > Greetings Pwscf users & developers,

Re: [Pw_forum] band gap from hybrid pseudopotentials

2016-08-06 Thread MSaqlain
Dear Paulatto thanks for your response. What would say about this? If the the system is relaxed with paw/us peusodos, Is it fair enough to use NC pseudos with hybrid scheme for obtaining band gap? (performing scf on ptimized configuration with paw/us pseudo) On 08/07/2016 01:28 AM, Lorenzo Pa

Re: [Pw_forum] band gap from hybrid pseudopotentials

2016-08-06 Thread Lorenzo Paulatto
The Fermi energy is only defined for metals, for insulators and semiconductors you can put it anywhere between the highest occupied and the lowest unoccupied level. The latter is only computed if you increase nbnd to compute at least one empty band. HTH -- Lorenzo Paulatto Written on a virtual k

Re: [Pw_forum] force system to charge transferring

2016-08-06 Thread Mostafa Youssef
Dear Zara, Please have a look at this tutorial http://theossrv1.epfl.ch/Main/OxidationStates Regards, Mostafa MIT ___ Pw_forum mailing list Pw_forum@pwscf.org http://pwscf.org/mailman/listinfo/pw_forum

[Pw_forum] force system to charge transferring

2016-08-06 Thread ZARA NBSH
Dear all, I study the interaction between 2 molecule. My system is totally natural ​,​ I would like to study the effect of charge transferring between 2 molecules or 2 atoms. Would you please help me, how can I ​force the system to transfer the charge between different atoms ? I really appreciate

Re: [Pw_forum] band gap from hybrid pseudopotentials

2016-08-06 Thread MSaqlain
Dear Pulatto Thanks for your correction. Yes, it is true that the code performs nsf in DFT mode. However, my concern was that neither scf (with hybrid scheme) nor the nscf (DFT only) of my system has any information about the Fermi energy. Can you please trough some light on this issue? If t

Re: [Pw_forum] band gap from hybrid pseudopotentials

2016-08-06 Thread Lorenzo Paulatto
Hello Saqlain, it is the functional, not the psuedopotentials, that is hybrid. And, as far as I know, you cannot do a non-scf calculation with hybrid functional (the code should raise an error, there are some deep technical reason for this). If I were you I would recheck the input and output files

Re: [Pw_forum] "scf" calculation with "PBE0" hybrid functional

2016-08-06 Thread Narendranath Ghosh
Dear Dario Thank you very much for your valuable suggestion. As my systems are quite large and require high computational resources , I decided to compare one of my result with that of PBE0. One problem that I am facing now "after successfully optimized the (CNT+Fullerene) systems now I am lookin

Re: [Pw_forum] q-point list in matdyn.in

2016-08-06 Thread Subhodip Chatterjee
Dear Bahadir, Thanks a lot for the wiki link and your clarification. Best regards Subhodip On Fri, Aug 5, 2016 at 1:14 PM, Bahadır SALMANKURT wrote: > Dear Subhodip, > > It is smilar for other systems. just use *high symmetry point character > related with the crystal. * > > https://en.wikiped