WebPhonopy has an interface to read and write FORCE_CONSTANTS or force_constants.hdf5. To read and write these files are controlled by force constants tags and FC_FORMAT, READFC_FORMAT, WRITEFC_FORMAT. VASP users can use VASP DFPT interface to create FORCE_CONSTANTS from vasprun.xml. http://www.duoduokou.com/python/50807465877609635343.html

skelton-group/Phonopy-Spectroscopy - Github

WebThe phonopy Python package is a common tool used to evaluate phonons for a given atomic configuration. Atomic configurations are represented in phonopy by the phonopy.Atoms … cannot delete driver currently in use

How to choose the acoustic sum rule (asr) for Phonon

Weban·tiph·o·ny (ăn-tĭf′ə-nē) n. pl. an·tiph·o·nies 1. Responsive or antiphonal singing or chanting. 2. A composition that is sung responsively; an antiphon. 3. A responsive or reciprocal … WebThere may be other reasons, though, notably insufficient convergence: “Recently I found that the parameters tr2_ph for the phonons and conv_thr for the ground state can affect the quality of the phonon calculation, especially the “vanishing” frequencies for molecules.” (Info from Katalyn Gaal-Nagy). Anyway: if the nonzero frequencies ... WebPhonopy command-line-tool positional arguments: filename phonopy.yaml like file optional arguments: -h, --help show this help message and exit --abinit Invoke Abinit mode --aims Invoke FHI-aims mode --cp2k Invoke CP2K mode --crystal Invoke CRYSTAL mode --dftb + Invoke dftb+ mode --elk Invoke elk mode --qe Invoke Quantum espresso (QE) mode … fjc security lic