Study lattice, temperature, EPC, and superconductivity

Phonopy

A harmonic lattice-dynamics package that constructs and analyzes force-constant models from external force calculations.

Access

Open

Interfaces

CLI, GUI, Python

Tags

lattice-dynamics, postprocess

Entry points reviewed

10 August 2026

Official entry points

• Phonopy mode-animation guidedocs
• Homepagehomepage
• Documentationdocs
• Source repositorysource
• Phonopy examplestutorial

Where in the research workflow

• Harmonic Phonons
• Test Numerical Convergence

Reviewed practical pages

• Check a Harmonic-Mode LedgerReconstruct a real Silicon Γ-point QE 7.5 DFPT mode ledger while keeping a one-q-point calculation separate from a phonon-dispersion or stability claim.

What to verify

Mode animation supports diagnosis but does not establish whether an imaginary mode is physical.

A resource identity, reachable link, successful program run, or plausible figure does not by itself establish numerical convergence, scientific validity, or suitability for a material.