EPW Forum

Dear hpaudya1, Thanks for your time to reply to y message. However, I cannot see any warning in the output file before the code crashed. The temperature at which the code crashed is actually 0.3 K . the estimated Tc from Allen Dynes is around 12.37K. I ma trying to reproduce the Pb example in the EP...

Dear all, I am running the Pb example to solve the isotropic Eliashberg equations to obtain the superconducting edge gap and Tc at various temperatures. EPW performs the first run but then crashes with a mysterious error involving several "tasks": %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%...

Dear H. Lee,

The 'bvec' files were not produced since the code stops before calculating them.
As I recall , the velocity matrix elements were not computed in the older version of EPW-3.0.0
As far as lambda (el-ph coupling) calculations are concerned, My calculations are running fine.

Regards

Dear H.Lee,

Setting vme=.false. in the epw1.in and in subsequent input files solved the problem.

Thanks once again for your help.

Regards

Dear H. Lee,

Thanks for your suggestions. Meanwhile the calculations are running with vme=.false. I will check if the calculations survive beyond the 'decay.H' output. If not, I will see how I can resolve it and let you know.

Regards

Dear H. Lee, Once again thank you very much for your effort to help me discover where the error is. Answering your questions: 1- the q-points are exactly the same in both systems. 2- nosym=.true. is set the same in both systems. I usually set it to true so that exactly 2304 points are produced. 3- t...

Dear H. Lee, Thank you for your response. The version of EPW I am using is the one that comes with teh QE-6.5 package. I did not download it separately. 1- my PBS script file looks like: #PBS -S /bin/bash #PBS -l select=8:ncpus=16:mpiprocs=16:ompthreads=1:mem=50gb #PBS -N system ##PBS -l place=free:...

Dear All, I am performing some elph calculations using EPW. However while running the epw1.in input file (to calculate the elph matrices), the code calculates everything but then stops with an error: Use zone-centred Wigner-Seitz cells Number of WS vectors for electrons 2353 Number of WS vectors for...

Dear all, I was wondering if the electron phonon coupling changes with temperature. If yes, Is it possible to directly calculate this change by varying the flag etemp (does this flag have an effect at all when calculating the e-p coupling). Or it has to be done indirectly by varying the Fermi energy...

Please,

can anyone respond to my question whenever you guys are free.

Thanks