Search found 4 matches

by jyxi
Fri Oct 04, 2019 5:54 am
Forum: General discussion
Topic: Warning: too many iterations in bisection
Replies: 0
Views: 5799

Warning: too many iterations in bisection

Dear sponce, I use qe-6.4.0 package and the corresponding program EPW v.5.1.0 to start my work for calculating mobility. After Having done unfolding part, I set int_mob = .true. and carrier = .true. in the epw.in file to get the mobility. However, I find when the value of the parameter ncarrier is l...
by jyxi
Tue Mar 06, 2018 8:50 am
Forum: Electron-phonon
Topic: A problem when ecutrho was used
Replies: 2
Views: 18995

A problem when ecutrho was used

Dear all, I encountered a problem when I was running the EPW code by using USPP: If only ecutwfc was defined or ecutwfc and ecutrho were both defined (ecutrho is small) in SCF and NSCF, and then the EPW ran well; however, the EPW would always keep at follow status and couldnt run to next step if ecu...
by jyxi
Wed Jan 17, 2018 4:37 am
Forum: General discussion
Topic: Phonon Wannierization
Replies: 1
Views: 3001

Re: Phonon Wannierization

maybe you could change the frozwindow or nbnd to get better spread :lol:
by jyxi
Fri Jan 12, 2018 10:12 am
Forum: Electron-phonon
Topic: negative phonon frequencies near q=0
Replies: 1
Views: 4509

negative phonon frequencies near q=0

Dear Dr. Samuel Ponc Thanks for your reply. According to your suggestion, we recalculated the EPW-interpolated phonon dispersion by QE-6.2.1 and EPW-4.3.1 with asr_typ = crystal, however, there is no difference between crystal and simple , and the phonon frequencies are still negative as well as no ...