EPW Forum

Hi Shashi,
Could you please send me the documentation for EPW, of the corrected formula implemented in EPW? I recently used that formula in one of my paper. A manual in a short page would be enough and helpful.

Thanks,
Shubham

Hi SHashi,

I am using EPW 5.6, I will try with the latest version and get back to you.

Thank you

Hi Shashi, When I remove max_memlt tag from the input, I get the following memory related error: stopping ... %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% Error in routine mem_size_eliashberg (1): Size of required memory exceeds max_memlt ...

Hi Hari, Yes, the maximum memory available per core in my system is 18GB. I can't use more than that. I will check the calculations reducing the parameters you suggested. However, is there any other parameter which can reduce the memory usage, such as, `etf_mem`? Please let me know. Thank you ...

Dear Experts, I am getting this large memory issue, which I am unable to resolve. I tried looking for a solution into the forum but did not find a proper solution. Size of required memory per pool: ~= 171.5761 Gb %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% Error in ...

Thank you Shashi for the clarification.

Dear Shashi, Thank you for your reply and the reference. But isn't lambda is very large? In this paper by Allen and Dynes: https://journals.aps.org/prb/pdf/10.1103/PhysRevB.12.905 , it has been explained whenever lambda > 1.5 there is correction factor used in Allen dynes Tc. Is that factor taken ...

I noticed that w_log is in meV while it should be in Kelvin. Could anyone tell what is the conversion formula for logarithmic average of omega? Is it E = kB.T? Also, I noticed that from QE calculations I am getting lambda close to 1 while EPW gives 1.65. Why there is a discrepancy? Additionally, a2F ...

Dear EPW Experts, I am running one anisotropic superconducting calculation where the calculation gives the following output in epw.out file: ...... a2f file is found and will be used to estimate initial gap Finish reading a2f file Electron-phonon coupling strength = 1.6514433 Estimated Allen-Dynes ...

Dear Hitoshi,

Thank you for the response. This clears the confusion and answers my question.

Sincerely,
Shubham