EPW Forum

hi dear administrators and users
hope that all EPW community doing well

i have a question about the carrier concentration ncarrier , i know in the input this value is fixed (1.10 d+13) for the metals but the question why we use it particularly and how we get this value.



Best regards

Hi dear experts and users: Currently i inspect the electron-plasmon in semi-conductors i have two questions: 1 how can i adjust the doping carrier concentration in intrinsic materials ? 2 What can i do with EPW code in the plasmon investigation ? can it calculate the loss function and the plasmon en...

hello dear users and experts
i have a question about the imaginary and real axis of frequencies when i plot the superconducting gap on them

what means the imaginary axis in a physical point of view


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thanks you sir i achieve the first calculation of epw1 on mobility but when i run the epw2 it gives me an error message %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% Error in routine epw_readin (1): must use same w90 rotation matrix for entire run %%%%%%%%%%%%%%%%%%%...

hi dear experts and users i run the calculations in order to have the mobility but i got this error message Progress kgmap: ######################################## kmaps : 1059.15s CPU 1059.55s WALL ( 1 calls) Reading interatomic force constants %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%...

Hello again dear users and experts I'm confronting a new error in my calculation of superconducting gap Finish reading .freq file Fermi level (eV) = -1.0778270134E+00 DOS(states/spin/eV/Unit Cell) = 9.9884365393E-01 Electron smearing (eV) = 5.0000000000E-03 Fermi window (eV) = 1.5000000000E+01 Nr k-...

Thanks you sir harry


best

another question if i want to increase my iteration progress which's the command to use Nr k-points within the Fermi shell = 16000 out of 16000 Progression iq (fine) = 100/ 16000 Progression iq (fine) = 200/ 16000 Progression iq (fine) = 300/ 16000 Progression iq (fine) = 400/ 16000 Progression iq (...

in addition i have 2 atoms in my system



best regard sir

Hello sir Harry

Concerning the meshes i use for k 32x20x1 and q 16x10x1
for the superconducting meshes i use nkf 160x100x1
nqf 160x100x1