EPW Forum

Dear Forum Members, I have a question regarding the histograms that indicate the number of states on the Fermi surface with that superconducting gap energy. For example, below is the figure from EPW documentation / Tutorial / Superconductivity / MgB2: Superconducting magnesium diboride — EPW d ...

Hi Shashi, In continuation to my earlier post today, I found that in the tutorial in Figure 15, mu-star-c is mentioned to be 0.25. So, I again ran epw2.in with muc=0.25 The plot is as follows: nb.imag_aniso_gap0_013.50-mustar-0.25.png So, there is better agreement with the delta (meV) values ...

Hi Shashi, I am able to run the 5 th step in Exercise 3. Please find below the graph by plotting nb.imag_aniso_gap0_013.50 nb.imag_aniso_gap0_013.50_pic.png I am little worried that the graph is not matching with that given in the tutorial (Figure 15, of Hands-on session of Calculation of ...

Dear Shashi,

Thank you for your reply and also for testing the inputs.
I am using EPW-v.5.8.1 which is compatible with my existing Quantum Espresso v.7.3.1

So, would you recommend installing EPW-6.0.0 ?

Thank you,
Best regards,
Krishnendu

Dear Shashi,

Thank you for your reply. Yes I already had the "ir_nlambda6_ndigit8.dat" file in the irobjs folder. I obtained it from the docs.epw-code.org/doc/Inputs.html: below the gridsamp.

So, I guess the problem is somewhere else. Kindly help me.

Thank you,
Best regards,
Krishnendu

Dear Shashi, Thank you for your reply, It worked. Please find the epw2.in script below which I made by following the steps given in the Exercise-3, 5th step. When I try to run the script I get the error: %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% Error in routine epw_readin (1): Bad line in ...

Hello EPW Forum, I am trying to run the Exercise 3 of the Hands-on session (Wed. 9) of the "Calculations of superconducting Tc" (EPW Summer School 2024) I ran upto 4 th step and successfully ran the epw1.in In the 5th step when I give the command $ ln -s /epw-lambda/*fmt I am getting the following ...

Thank you Shashi for the reply.
I am now using eliashberg=.true. And there I can input the value of degaussq

Dear moderator,

I have a question regarding the EPW/examples/pb/woSOC/epw (EPW v.5.8.1). It has an output file, pb.a2f.01.0.075. It is the Eliashberg Spectral Function at input temps = 0.075 ! K. Kindly let me know about the the number .01 in the file name.

Thank you,
Best regards,
Krishnendu