Fig. 3: Errors in the volume.
From: Universal machine learning interatomic potentials are ready for phonons

Violin plots of the errors in the volume of the unit cell per atom (∆Volume, in Å3/atom), relative to the PBE reference data.
From: Universal machine learning interatomic potentials are ready for phonons
Violin plots of the errors in the volume of the unit cell per atom (∆Volume, in Å3/atom), relative to the PBE reference data.