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Phon-1k — Phonons & dynamical stability

Phon-1k contains 1,000 periodic structures, referenced against r²SCAN DFPT, released as r2026.2. It scores Γ-point frequency error (cm⁻¹), False imaginary-mode rate (%), Missed-instability rate (%).

Reference generation: VASP 6.5 DFPT, 2×2×2 supercell minimum, 0.01 Å displacements; instability = any mode < −5 cm⁻¹

Provenance: Generated in-house