[Thermo_pw-forum] [SUSPECT ATTACHMENT REMOVED] thermo_pw ..what='mur_lc_t'

physic s mfphysics at hotmail.com
Fri Feb 5 19:02:46 CET 2021


Hello everyone
I want to thanks Mr. Andrea Dal Corso and others for their effort in developing thermo_pw package.
I want to calculate mode Gruneisen versus temperature for Cs2TiI6 cubic perovskite structure with (Fm3m-225) the file i attached.
After several running of this code, code return errors that may arise from negative phonon frequency.
It is worth mentioning that structure has been vc-relaxed and is stable at 0 K, due to the lack of negative frequency mode that i calculated from Phonopy and other articles implying that this structure is stable at 0 K.
Please help me to calculate mode Gruneisen and heat capacity versus temperature for this structure file.
I have attached input, phonon dispersion 'ps' file and some of output obtained from thermo_pw.
another problem, is that can you reply your answer to this e-mail address, because i can't subscribe to thermo_pw user mail.
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