EPW Forum

Good day, I want to ask a question about the input parameters use_ws and use_ws_distance. I have not found the description of these parameters and their recommended values for modeling on the website in the input parameters section - https://docs.epw-code.org/doc/Inputs.html. However, these input ...

Dear V.-A.,

thank you for responding to the letter, which contains useful and valuable information for me.


Best regards,

Valery

Good day, I would like to ask a question that relate to modeling the average velocity of electrons and holes. In modeling I used the program QE v.7.2 and EPW v.5.7. Question is related to the units of the velocity values that are obtained in the IBTEvel_sup.fmt and vmedata.fmt files. What conversion ...

Good afternoon, I'd like to ask a question related to the appearance of errors and stopping of the modeling process during the determination of scattering rates for h-BN material. I have used QE v.7.2 and EPW v.5.8. The files BN.epw.in and BN.epw.out, as well as the computer output file, are shown ...

Dear Hari,

thank you for responding to the letter, which contains useful and valuable information for me.


Best regards,

Valery

Dear All, could you explain how in the EPW program to determine the type of phonon mode, which is given by the parameter ν, represented in the simulation results by an integer value. For example, in Tutorial Tue. 5, March 19-23, 2018, "Electron-phonon coupling using Quantum Espresso," in Exercise 2, ...

Dear all. My question concerns simulation of hole mobility using iterative solution of Boltzmann equation for C2H2 structure. The programs QE-7.0 and EPW-5.4.1 were used. In the appendix there are three files which reflect features of modeling. I can send the other files, which I used in modeling ...

Dear all, My questions concerns modeling of scattering rates in complex semiconductor structures. It is known that when using EPW it is possible to obtain the scattering rates when setting the parameters scattering_rates = .true. and scattering_rates_serta = .true. or scattering_rates_0rta = .true ...

Dear all, I am trying to simulate a structure containing carbon and hydrogen atoms using the programs EPW 5.4 and QE-6.8. The program description says that the EPW 5.4 program includes the possibility of mode-resolved, i.e. phonon modes, scattering rates. In the scattering_rate_300 file I received ...

Dear H. Lee, Thank you for your reply. In the appendix I send the compressed text of files C6Li1.epw.in and C6Li1.epw.out, with which I try to arrange printing of scattering rates values and electron velocities with operator wdata(i). On running these files the program stops with a warning ...