EPW Forum

Hi,

Can you please provide all your input files (scf, nscf, and epw)? What is the code version that you are using?

Thanks,
Roxana

Hi Sandeep,

Are you using the same NC pseudopotentials as provided in the EPW example?

Best,
Roxana

Hi Sandeep,

The 4th column gives the weight of each irreducible q-point.

Best,
Roxana

You can comment the line in the code that checks that the smearing degaussw is not more than 1/4 of fsthick and recompile the code. However, I would not recommend doing that since degaussw is used in other parts of the code as well. Instead you can define weight based on the smearing value you would...

Hi,

This step is only meant indeed for visualization purposes. If you increase the smearing value you should get a smother curve.

Best,
Roxana

Hi,

Just to add to Hyungjun email. SCDM-k implementation in EPW and pw2wannier.f90 subroutines should be the same unless some modifications were done in the pw2wannier.f90 implementation sometime after the release of QE 6.5 in November 2019.

Best,
Roxana

Hi, If you plan only to run isotropic ME starting from a file you need to use something like in the following input -- &inputepw prefix = 'lead' amass(1) = 207.2 outdir = './' ep_coupling = .false. elph = .false. kmaps = .false. epbwrite = .true. epbread = .false. epwwrite = .true. epwread = .false....

Hi, As shown in all examples on EPW there are two sets of grids for both electrons and phonons: 1) the starting coarse grids that have to be uniform and consistent with nscf and phonon calculations and k- grid should be the same as the nscf calculation nk1 = XXX nk2 = XXX nk3 = XXX q-grid should be ...

Yes, you can calculate the superconducting gap by solving the Migdal-Eliashberg equations.

Most likely it won't work.