WebI first optimized a NaCl cell using VASP with EDIFF/EDIFFG = 1e-8 eV. Following the example, I created a 2x2x2 supercell from the optimized unit cell with the command "phonopy -d --dim="2 2 2" ".... WebhiPhive is a tool for efficiently extracting high-order force constants from atomistic simulations, most commonly density functional theory calculations. It has been implemented in the form of a Python library, which allows it to be readily integrated with many first-principles codes and analysis tools accessible in Python.
Frequently asked questions — hiPhive documentation
http://www.nanolab.ece.ufl.edu/document/VASP_phonopy.pdf Web• Create a supercellwith Phonopy using the relaxed primitive unit cell – phonopy-d --dim=“A1 A2 A3" -c POSCAR-UC • A1…3 are the repeats in the lattice vector directions ... – The … earth day shirts for boys
problem with 2x1x1 supercell · Issue #121 · phonopy/phonopy
WebJan 25, 2016 · Run phonopy with the original unit cell POSCAR-unitcell and setting tag FORCE_CONSTANTS = READ or --readfc option, e.g., as found in example/NaCl-VASPdfpt % phonopy --dim="2 2 2" -c POSCAR-unitcell band.conf If you properly follow the above steps, you should got the right dispersion of phonon. WebDear Sir, I have figured out the issue. Previously, I had copied the extract.py to where I was doing calculations. which did not work because the interface folder is given in the tools itself. Web>phonopy -d --dim=”3 3 3” -c CONTCAR The files disp.yaml SPOSCAR POSCAR-xxx will be generated. Rename SPOSCAR to POSCAR and calculate the force with VASP, setting IBRION=8 in INCAR . The VASP will generate the needed info in vasprun.xml . Generate the force constant using phonopy. >phonopy --fc vasprun.xml ct fishing season 2021